de Normandie, Lord Duke Robert

de Normandie, Lord Duke Robert

Male 1000 - 1035  (35 years)

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  • Name de Normandie, Robert  [1, 2, 3, 4, 5, 6, 7, 8, 9
    of NORMANDY, Robert I
    of NORMANDY, Robert I
    Title Lord Duke 
    Birth 22 Jun 1000  Rouen, Seine-Maritime, Haute-Normandie, France Find all individuals with events at this location  [1, 6, 7, 8
    Christening France Find all individuals with events at this location 
    Gender Male 
    Appointments / Titles 1026  [1, 7, 8
    Count of Évreux (Hiémois) 
    Appointments / Titles Between 1027 and 1035  Normandy, France Find all individuals with events at this location 
    Duke of Normandie 
    House House of Normandy  [1, 7, 8
    Nickname The Magnificent 
    FSID LRCQ-X3Y 
    Death 2 Jul 1035  Nicaea, Iznik, Bursa, Turkey Find all individuals with events at this location 
    Burial Aft 2 Jul 1035  Nicaea Cathedral, Iznik, Bursa, Turkey Find all individuals with events at this location  [1, 3, 6, 7, 8
    Person ID I26019  The Thoma Family
    Last Modified 20 Sep 2023 

    Father de Normandie, Sir Richard II,   b. 23 Aug 963, Fécamp, Seine-Maritime, Haute-Normandie, France Find all individuals with events at this locationd. 28 Aug 1026, Fécamp, Seine-Maritime, Haute-Normandie, France Find all individuals with events at this location (Age 63 years) 
    Relationship natural 
    Mother de Bretagne, Lady Judith,   b. 21 Mar 982, Rennes, Ille-et-Vilaine, Bretagne, France Find all individuals with events at this locationd. 16 Jun 1017, Bernay, Eure, Haute-Normandie, France Find all individuals with events at this location (Age 35 years) 
    Relationship natural 
    Marriage 1000  Normandy, France Find all individuals with events at this location  [1, 10
    Family ID F12341  Group Sheet  |  Family Chart

    Family de Falaise, Herleva,   b. 9 Jun 1003, Falaise, Calvados, Basse-Normandie, France Find all individuals with events at this locationd. 23 Apr 1078, Fatouville, Eure, Haute-Normandie, France Find all individuals with events at this location (Age 74 years) 
    Children 
     1. de Normandie, Adélaïde,   b. 14 Oct 1026, Falaise, Calvados, Basse-Normandie, France Find all individuals with events at this locationd. 3 Aug 1090, Gournay, Eure, Haute-Normandie, France Find all individuals with events at this location (Age 63 years)  [natural]
     2. Beauclerc, King of England William,   b. 1028, Falaise, Calvados, Basse-Normandie, France Find all individuals with events at this locationd. 15 Sep 1087, Rouen, Seine-Maritime, Haute-Normandie, France Find all individuals with events at this location (Age 59 years)  [natural]
    Family ID F12339  Group Sheet  |  Family Chart
    Last Modified 20 Sep 2023 

  • Event Map
    Link to Google MapsBirth - 22 Jun 1000 - Rouen, Seine-Maritime, Haute-Normandie, France Link to Google Earth
    Link to Google MapsAppointments / Titles - Duke of Normandie - Between 1027 and 1035 - Normandy, France Link to Google Earth
    Link to Google MapsDeath - 2 Jul 1035 - Nicaea, Iznik, Bursa, Turkey Link to Google Earth
    Link to Google MapsBurial - Aft 2 Jul 1035 - Nicaea Cathedral, Iznik, Bursa, Turkey Link to Google Earth
     = Link to Google Earth 

  • Photos
    FitzRichard, Robert.JPG
    FitzRichard, Robert.JPG

    Documents
    of NORMANDY, Robert I
    of NORMANDY, Robert I

  • Notes 
    • Robert I, Duke of Normandy
      For Robert I’s ancestor who took the baptismal name
      “Robert”, see Rollo .
      Robert the Magnificent (French : le Magni-
      Family tree
      fique )[lower-alpha 1] (22 June 1000 – 1–3 July 1035), was the
      Duke of Normandy from 1027 until his death in 1035.
      Owing to uncertainty over the numbering of the Dukes of
      Normandy he is usually called Robert I, but sometimes
      Robert II with his ancestor Rollo as Robert I. He was the
      father of William the Conqueror who became in 1066
      King of England and founded the House of Normandy.
      1 Life
      Robert was the son of Richard II of Normandy and
      Judith , daughter of Conan I, Duke of Brittany . He was
      also grandson of Richard I of Normandy , great-grandson
      of William I of Normandy and great-great grandson of
      Rollo , the Viking who founded Normandy. Before he
      died, Richard II had decided his elder son Richard III
      would succeed him while his second son Robert would
      become Count of Hiémois .[1] In August 1026 their father,
      Richard II, died and Richard III became duke, but
      very soon afterwards Robert rebelled against his brother,
      was subsequently defeated and forced to swear fealty to
      his older brother Richard.[2]
      1.1 Early reign
      When Richard III died a year later, there were suspicions
      that Robert had something to do with his death. Although
      nothing could be proved, Robert had the most to gain.[3]
      The civil war Robert I had brought against his brother
      Richard III was still causing instability in the duchy.[3]
      Private wars raged between neighbouring barons. This
      resulted in a new aristocracy arising in Normandy during
      Robert’s reign.[3] It was also during this time that many of
      the lesser nobility left Normandy to seek their fortunes in
      southern Italy and elsewhere.[3] Soon after assuming the
      dukedom, possibly in revenge for supporting his brother
      against him, Robert I assembled an army against his uncle,
      Robert , Archbishop of Rouen and Count of Évreux.
      A temporary truce allowed his uncle to leave Normandy
      in exile but this resulted in an edict excommunicating
      all of Normandy, which was only lifted when Archbishop
      Robert was allowed to return and his countship
      was restored.[4] Robert also attacked another powerful
      churchman, his cousin Hugo III d'Ivry, Bishop of Bayeux,
      banishing him from Normandy for an extended period of
      time.[5] Robert also seized a number of church properties
      belonging to the Abbey of Fecamp.[6]
      1.2 Outside of Normandy
      Despite his domestic troubles Robert decided to intervene
      in the civil war in Flanders between Baldwin V, Count of
      Flanders and his father Baldwin IV whom the younger
      Baldwin had driven out of Flanders.[7] Baldwin V, supported
      by king Robert II of France , his father-in-law, was
      persuaded to make peace with his father in 1030 when
      Duke Robert promised the elder Baldwin his considerable
      military support.[7] Robert gave shelter to Henry I
      of France against his mother, Queen Constance , who favored
      her younger son Robert to succeed to the French
      throne after his father Robert II.[8] For his help Henry I
      rewarded Robert with the French Vexin.[8] In the early
      1030s Alan III, Duke of Brittany began expanding his influence
      from the area of Rennes and appeared to have
      designs on the area surrounding Mont Saint-Michel[9]
      After sacking Dol and repelling Alan’s attempts to raid
      Avranches, Robert mounted a major campaign against
      his cousin Alan III.[9] However, Alan appealed to their
      uncle, Archbishop Robert of Rouen, who then brokered
      a peace between Duke Robert and his vassal Alan III.[9]
      His cousins, the Athelings Edward and Alfred , sons of his
      aunt Emma of Normandy and Athelred, King of England
      1
      2 4 REFERENCES
      had been living at the Norman Court and at one point
      Robert, on their behalf, attempted to mount an invasion
      of England but was prevented in doing so, it was said, by
      unfavorable winds,[10] that scattered and sank much of the
      fleet. Robert made a safe landing in Guernsey. Gesta Normannorum
      Ducum stated that King Cnut sent envoys to
      Duke Robert offering to settle half the Kingdom of England
      on Edward and Alfred. After postponing the naval
      invasion he chose to also postpone the decision until after
      he returned from Jerusalem.[11]
      1.3 The Church and his pilgrimage
      Robert’s attitude towards the Church had changed noticeably
      certainly since his reinstating his uncle’s position as
      Archbishop of Rouen.[12] In his attempt to reconcile his
      differences with the Church he restored property that he
      or his vassals had confiscated, and by 1034 had returned
      all the properties he had earlier taken from the abbey of
      Fecamp.[13]
      After making his illegitimate son William his heir, he
      set out on pilgrimage to Jerusalem .[14] According to
      the Gesta Normannorum Ducum he travelled by way of
      Constantinople , reached Jerusalem, fell seriously ill and
      died[lower-alpha 2] on the return journey at Nicaea on 2 July
      1035.[14] His son William, aged about eight, succeeded
      him.[15]
      According to the historian William of Malmesbury ,
      decades later his son William sent a mission to Constantinople
      and Nicaea, charging it with bringing his father’s
      body back to Normandy for burial.[16] Permission
      was granted, but, having travelled as far as Apulia (Italy)
      on the return journey, the envoys learned that William
      himself had meanwhile died.[16] They then decided to reinter
      Robert’s body in Italy.[16]
      2 Issue
      By his mistress, Herleva of Falaise,[17] he was father of:
       William the Conqueror (c. 1028–1087).[18]
      By Herleva or possibly another concubine,[lower-alpha 3][19]
      he was the father of:
       Adelaide of Normandy , who married firstly,
      Enguerrand II, Count of Ponthieu .[20] She married
      secondly, Lambert II, Count of Lens , and thirdly,
      Odo II of Champagne .[21]
      3 Notes
      [1] He was also, although erroneously, said to have been
      called 'Robert the Devil' (French: le Diable). Robert I was
      never known by the nickname 'the devil' in his lifetime.
      'Robert the Devil' was a fictional character who was confused
      with Robert I, Duke of Normandy sometime near
      the end of the Middle Ages. See: François Neveux, A
      Brief History of the Normans, trans. Howard Curtis (Constable
      & Robinson, Ltd. London, 2008), p. 97 & n. 5.
      [2] It was reported by William of Malmesbury (Gesta regum
      Anglorum, Vol. i, pp. 211-12) and Wace (pt. iii, II, 3212–
      14) that Robert died of poisoning. William of Malmsebury
      pointed to a Ralplh Mowin as the instigator. See:
      The Gesta Normannorum Ducum of William of Jumièges,
      Orderic Vitalis, and Robert of Torigni, Ed. & Trans. Elizabeth
      M.C. Van Houts, Vol. I (Clarendon Press, Oxford,
      1992), pp. 84–5, n. 2. However it was common in Normandy
      during the eleventh century to attribute any sudden
      and unexplained death to poisoning. See: David C.
      Douglas, William the Conqueror (University of California
      Press, Berkeley and Los Angeles, 1964), p. 411
      [3] The question of who her mother was seems to remain unsettled.
      Elisabeth Van Houts ['Les femmes dans l'histoire
      du duché de Normandie', Tabularia « Études », n° 2, 2002,
      (10 July 2002), p. 23, n. 22] makes the argument that
      Robert of Torigny in the GND II, p. 272 (one of three
      mentions in this volume of her being William’s sister) calls
      her in this instance William’s 'uterine' sister' (soror uterina)
      and is of the opinion this is a mistake similar to one
      he made regarding Richard II, Duke of Normandy and his
      paternal half-brother William, Count of Eu (calling them
      'uterine' brothers). Based on this she concludes Adelaide
      was a daughter of Duke Robert by a different concubine.
      Kathleen Thompson ["Being the Ducal Sister: The Role
      of Adelaide of Aumale”, Normandy and Its Neighbors,
      Brepols, (2011) p. 63] cites the same passage in GND as
      did Elisabeth Van Houts, specifically GND II, 270–2, but
      gives a different opinion. She noted that Robert de Torigni
      stated here she was the uterine sister of Duke William “so
      we might perhaps conclude that she shared both mother
      and father with the Conqueror.” But as Torigni wrote a
      century after Adelaide’s birth and in that same sentence
      in the GND made a genealogical error, she concludes that
      the identity of Adelaide’s mother remains an open question.
      4 References
      [1] The Gesta Normannorum Ducum of William of Jumieges,
      Orderic Vitalis, and Robert of Torigni, Vol. II, Books VVIII,
      ed. Elisabeth M.C. Van Houts (Clarendon Press,
      Oxford, 1995), pp. 40–1
      [2] David Crouch, The Normans, The History of a Dynasty
      (Hambledon Continuum, London, New York, 2002), p.
      46
      [3] David C. Douglas, William the Conqueror (University of
      California Press, Berkeley and Los Angeles, 1964), p. 32
      [4] David Crouch, The Normans, The History of a Dynasty
      (Hambledon Continuum, London, New York, 2002), p.
      48
      3
      [5] François Neveux. A Brief History of The Normans (Constable
      & Robbinson, Ltd, London, 2008), p. 100
      [6] David Crouch, The Normans, The History of a Dynasty
      (Hambledon Continuum, London, New York, 2002), p.
      49
      [7] David Crouch, The Normans, The History of a Dynasty
      (Hambledon Continuum, London, New York, 2002), pp.
      49–50
      [8] Elisabeth M C Van Houts, The Normans in Europe
      (Manchester University Press, Manchester and New York,
      2000), p. 185
      [9] David Crouch, The Normans, The History of a Dynasty
      (Hambledon Continuum, London, New York, 2002), p.
      50
      [10] Christopher Harper-Bill; Elisabeth Van Houts, A Companion
      to the Anglo-Norman World (Boydell Press, Woodbridge,
      UK, 2003), p. 31
      [11] The Gesta Normannorum Ducum of William of Jumièges,
      Orderic Vitalis, and Robert of Torigni, Ed. & Trans. Elizabeth
      M.C. Van Houts, Vol. I (Clarendon Press, Oxford,
      1992), pp. 78–80
      [12] François Neveux. A Brief History of The Normans (Constable
      & Robbinson, Ltd, London, 2008), p. 102
      [13] François Neveux. A Brief History of The Normans (Constable
      & Robbinson, Ltd, London, 2008), p. 103
      [14] The Gesta Normannorum Ducum of William of Jumièges,
      Orderic Vitalis, and Robert of Torigni, Ed. & Trans. Elizabeth
      M.C. Van Houts, Vol. I (Clarendon Press, Oxford,
      1992), pp. 80-5
      [15] François Neveux, A Brief History of the Normans, trans.
      Howard Curtis (Constable & Robinson, Ltd. London,
      2008), p. 110
      [16] William M. Aird, Robert Curthose, Duke of Normandy:
      C. 1050–1134 (Boydell Press, Woodbridge, UK, 2008),
      p. 159 n. 38
      [17] The Gesta Normannorum Ducum of William of Jumièges,
      Orderic Vitalis, and Robert of Torigni, Ed. & Trans. Elizabeth
      M.C. Van Houts, Vol. I (Clarendon Press, Oxford,
      1992), p. lxxv
      [18] David C. Douglas, William the Conqueror (University of
      California Press, Berkeley and Los Angeles, 1964), p. 15,
      passim
      [19] David C. Douglas, William the Conqueror (University of
      California Press, Berkeley and Los Angeles, 1964), pp.
      380–1 noting she may or may not be Herleva’s daughter
      but probably is
      [20] George Edward Cokayne, The Complete Peerage of England
      Scotland Ireland Great Britain and the United Kingdom,
      Extant Extinct or Dormant, Vol. I, ed. Vicary Gibbs
      (The St. Catherine Press, Ltd., London, 1910), p. 351
      [21] David C. Douglas, William the Conqueror (University of
      California Press, Berkeley and Los Angeles, 1964), p. 380
      4 5 TEXT AND IMAGE SOURCES, CONTRIBUTORS, AND LICENSES
      5 Text and image sources, contributors, and licenses
      5.1 Text
       Robert I, Duke of Normandy Source: https://en.wikipedia.org/wiki/Robert_I%2C_Duke_of_Normandy?oldid=769821280 Contributors:
      Ktsquare, Stan Shebs, John K, Adam Bishop, Tpbradbury, Itai, Mksmith, Wetman, Dimadick, Donarreiskoffer, Henrygb, Everyking, Klemen
      Kocjancic, Rich Farmbrough, Furius, Imars, Falastur, A2Kafir, Grutness, Wtmitchell, VivaEmilyDavies, Gene Nygaard, FeanorStar7,
      PatGallacher, Mississippienne, LadyofHats, Cuchullain, Porcher, Scafloc, RebelScum, Kmorozov, YurikBot, RussBot, Kauffner, Chaser,
      Tvarnoe~enwiki, Allens, SmackBot, Vald, Eskimbot, Srnec, GoodDay, Tamfang, Interfector, Downwards, Clicketyclack, Andrew Dalby,
      Grblomerth, Hawkestone, Carpenoctem, WeggeBot, Thijs!bot, Andyjsmith, Tmutant, Maed, Tehem, AntiVandalBot, Txomin, Bearpatch,
      Parsecboy, Xn4, Mclay1, Momoboy, JoergenB, MartinBot, Agricolae, Vortimer, Kansas Bear, VolkovBot, Arigato1, FinnWiki, Amcfadgen,
      Martarius, Sun Creator, RogDel, Surtsicna, Addbot, Halle23, Favonian, The Quill, Lightbot, Luissilveira, Luckas-bot, Yobot, Rubinbot,
      LilHelpa, Xqbot, Sketchmoose, RibotBOT, FrescoBot, Serols, TobeBot, Chnou, Brianann MacAmhlaidh, Weijiya, DASHBot, EmausBot,
      John of Reading, ZéroBot, Eyadhamid, L1A1 FAL, NYMets2000, ClueBot NG, Rich Smith, Frietjes, Widr, Mwyandt, Iamthecheese44,
      Dainomite, Rory-the-roman, David.moreno72, Makecat-bot, Lugia2453, Baracs, Knedwelb, Mehransabeti, Ânes-pur-sàng, KasparBot and
      Anonymous: 47
      5.2 Images
       File:Cronological_tree_william_I.svg Source: https://upload.wikimedia.org/wikipedia/commons/f/f7/Cronological_tree_william_I.svg
      License: Public domain Contributors: ? Original artist: ?
       File:Flag_of_Basse-Normandie.svg Source: https://upload.wikimedia.org/wikipedia/commons/1/10/Flag_of_Basse-Normandie.svg
      License: GFDL Contributors: own work + alt='Haute-Normandie flag.svg' src='https://upload.wikimedia.org/wikipedia/commons/thumb/b/bf/Haute-Normandie_flag.svg/
      30px-Haute-Normandie_flag.svg.png' width='30' height='18' srcset='https://upload.wikimedia.org/wikipedia/commons/thumb/b/bf/
      Haute-Normandie_flag.svg/45px-Haute-Normandie_flag.svg.png 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/b/bf/
      Haute-Normandie_flag.svg/60px-Haute-Normandie_flag.svg.png 2x' data-file-width='500' data-file-height='300' /> Original artist:
      Zorlot
       File:P_vip.svg Source: https://upload.wikimedia.org/wikipedia/en/6/69/P_vip.svg License: PD Contributors: ? Original artist: ?
      5.3 Content license
       Creative Commons Attribution-Share Alike 3.0
      Robert I, Duke of Normandy
      From Wikipedia, the free encyclopedia
      Robert I

      Duke of Normandy
      Reign 1027–1035
      Predecessor Richard III
      Successor William II
      Born 22 June 1000
      Normandy, France
      Died 3 July 1035 (aged 35)
      Nicaea
      Issue William the Conqueror
      Adelaide of Normandy
      House House of Normandy
      Father Richard II, Duke of Normandy
      Mother Judith of Brittany

      Family tree
      Robert the Magnificent (French: le Magnifique)[a] (22 June 1000 – 1–3 July 1035), was the Duke of Normandy from 1027 until his death in 1035.

      Owing to uncertainty over the numbering of the Dukes of Normandy he is usually called Robert I, but sometimes Robert II with his ancestor Rollo as Robert I. He was the father of William the Conqueror who became in 1066 King of England and founded the House of Normandy.

      Contents

      [hide]
      1 Life
      1.1 Early reign
      1.2 Outside of Normandy
      1.3 The Church and his pilgrimage
      2 Issue
      3 Notes
      4 References
      Life

      Robert was the son of Richard II of Normandy and Judith, daughter of Conan I, Duke of Brittany. He was also grandson of Richard I of Normandy, great-grandson of William I of Normandy and great-great grandson of Rollo, the Viking who founded Normandy. Before he died, Richard II had decided his elder son Richard III would succeed him while his second son Robert would become Count of Hiémois. In August 1026 their father, Richard II, died and Richard III became duke, but very soon afterwards Robert rebelled against his brother, was subsequently defeated and forced to swear fealty to his older brother Richard.

      Early reign

      When Richard III died a year later, there were suspicions that Robert had something to do with his death. Although nothing could be proved, Robert had the most to gain. The civil war Robert I had brought against his brother Richard III was still causing instability in the duchy. Private wars raged between neighbouring barons. This resulted in a new aristocracy arising in Normandy during Robert’s reign. It was also during this time that many of the lesser nobility left Normandy to seek their fortunes in southern Italy and elsewhere. Soon after assuming the dukedom, possibly in revenge for supporting his brother against him, Robert I assembled an army against his uncle, Robert, Archbishop of Rouen and Count of Évreux. A temporary truce allowed his uncle to leave Normandy in exile but this resulted in an edict excommunicating all of Normandy, which was only lifted when Archbishop Robert was allowed to return and his countship was restored. Robert also attacked another powerful churchman, his cousin Hugo III d'Ivry, Bishop of Bayeux, banishing him from Normandy for an extended period of time. Robert also seized a number of church properties belonging to the Abbey of Fecamp.

      Outside of Normandy

      Despite his domestic troubles Robert decided to intervene in the civil war in Flanders between Baldwin V, Count of Flanders and his father Baldwin IV whom the younger Baldwin had driven out of Flanders. Baldwin V, supported by king Robert II of France, his father-in-law, was persuaded to make peace with his father in 1030 when Duke Robert promised the elder Baldwin his considerable military support. Robert gave shelter to Henry I of France against his mother, Queen Constance, who favored her younger son Robert to succeed to the French throne after his father Robert II. For his help Henry I rewarded Robert with the French Vexin. In the early 1030s Alan III, Duke of Brittany began expanding his influence from the area of Rennes and appeared to have designs on the area surrounding Mont Saint-Michel After sacking Dol and repelling Alan's attempts to raid Avranches, Robert mounted a major campaign against his cousin Alan III. However, Alan appealed to their uncle, Archbishop Robert of Rouen, who then brokered a peace between Duke Robert and his vassal Alan III. His cousins, the Athelings Edward and Alfred, sons of his aunt Emma of Normandy and Athelred, King of England had been living at the Norman Court and at one point Robert, on their behalf, attempted to mount an invasion of England but was prevented in doing so, it was said, by unfavorable winds, that scattered and sank much of the fleet. Robert made a safe landing in Guernsey. Gesta Normannorum Ducum stated that King Cnut sent envoys to Duke Robert offering to settle half the Kingdom of England on Edward and Alfred. After postponing the naval invasion he chose to also postpone the decision until after he returned from Jerusalem.

      The Church and his pilgrimage

      Robert's attitude towards the Church had changed noticeably certainly since his reinstating his uncle's position as Archbishop of Rouen. In his attempt to reconcile his differences with the Church he restored property that he or his vassals had confiscated, and by 1034 had returned all the properties he had earlier taken from the abbey of Fecamp.

      After making his illegitimate son William his heir, he set out on pilgrimage to Jerusalem. According to the Gesta Normannorum Ducum he travelled by way of Constantinople, reached Jerusalem, fell seriously ill and died[b] on the return journey at Nicaea on 2 July 1035. His son William, aged about eight, succeeded him.

      According to the historian William of Malmesbury, decades later his son William sent a mission to Constantinople and Nicaea, charging it with bringing his father's body back to Normandy for burial.[16] Permission was granted, but, having travelled as far as Apulia (Italy) on the return journey, the envoys learned that William himself had meanwhile died.[16] They then decided to re-inter Robert's body in Italy.[16]

      Issue

      By his mistress, Herleva of Falaise,[17] he was father of:

      William the Conqueror (c. 1028–1087).[18]
      By Herleva or possibly another concubine,[c][19] he was the father of:

      Adelaide of Normandy, who married firstly, Enguerrand II, Count of Ponthieu.[20] She married secondly, Lambert II, Count of Lens, and thirdly, Odo II of Champagne.[21]
      Notes

      He was also, although erroneously, said to have been called 'Robert the Devil' (French: le Diable). Robert I was never known by the nickname 'the devil' in his lifetime. 'Robert the Devil' was a fictional character who was confused with Robert I, Duke of Normandy sometime near the end of the Middle Ages. See: François Neveux, A Brief History of the Normans, trans. Howard Curtis (Constable & Robinson, Ltd. London, 2008), p. 97 & n. 5.
      It was reported by William of Malmesbury (Gesta regum Anglorum, Vol. i, pp. 211-12) and Wace (pt. iii, II, 3212–14) that Robert died of poisoning. William of Malmsebury pointed to a Ralplh Mowin as the instigator. See: The Gesta Normannorum Ducum of William of Jumièges, Orderic Vitalis, and Robert of Torigni, Ed. & Trans. Elizabeth M.C. Van Houts, Vol. I (Clarendon Press, Oxford, 1992), pp. 84–5, n. 2. However it was common in Normandy during the eleventh century to attribute any sudden and unexplained death to poisoning. See: David C. Douglas, William the Conqueror (University of California Press, Berkeley and Los Angeles, 1964), p. 411
      The question of who her mother was seems to remain unsettled. Elisabeth Van Houts ['Les femmes dans l'histoire du duché de Normandie', Tabularia « Études », n° 2, 2002, (10 July 2002), p. 23, n. 22] makes the argument that Robert of Torigny in the GND II, p. 272 (one of three mentions in this volume of her being William's sister) calls her in this instance William's 'uterine' sister' (soror uterina) and is of the opinion this is a mistake similar to one he made regarding Richard II, Duke of Normandy and his paternal half-brother William, Count of Eu (calling them 'uterine' brothers). Based on this she concludes Adelaide was a daughter of Duke Robert by a different concubine. Kathleen Thompson ["Being the Ducal Sister: The Role of Adelaide of Aumale", Normandy and Its Neighbors, Brepols, (2011) p. 63] cites the same passage in GND as did Elisabeth Van Houts, specifically GND II, 270–2, but gives a different opinion. She noted that Robert de Torigni stated here she was the uterine sister of Duke William "so we might perhaps conclude that she shared both mother and father with the Conqueror." But as Torigni wrote a century after Adelaide's birth and in that same sentence in the GND made a genealogical error, she concludes that the identity of Adelaide's mother remains an open question.

  • Sources 
    1. [S789] WORLD: Family Search, Family Tree.
      https://www.familysearch.org/search/tree/name

    2. [S818] NETHERLANDS: GenealogieOnline Trees Index 1000-Current.
      https://www.ancestry.com/search/collections/9289/

    3. [S844] WORLD: Foundation for Medieval Genealogy.
      http://fmg.ac/

    4. [S791] WORLD: Ancestry Family Trees.
      https://www.ancestry.com/search/categories/42/

    5. [S597] WORLD: Ancestry.com, Freepages Rootsweb.

    6. [S327] WORLD: Find-a-Grave.
      https://www.findagrave.com/

    7. [S788] WORLD: Wikipedia.
      https://www.wikipedia.org/

    8. [S2412] ENGLAND: English Monarchs.
      http://www.englishmonarchs.co.uk/index.htm

    9. [S790] WORLD: Family Search, Ancestral File.
      https://www.familysearch.org/search/genealogies

    10. [S854] WORLD: Royal Ancestors of Some LDS Families by Michael Call.
      https://www.familysearch.org/library/books/viewer/363496/?offset=13#page=1&viewer=picture&o=&n=0&q=