| Notes |
- Burchard was the most powerful ruler in Swabia around 900. In an exchange contract from 904, Burchard is also found as Vogt of the Swabian estates of Lorsch Abbey. In order to expand his power, he began against Count Palatine Erchanger, a loyal subordinate of Conrad I, and the Bishop Solomon III. von Konstanz, abbot of the St. Gallen monastery (→ Appenzell Ausserrhoden), to intrigue. Burchard was captured and charged by the Swabian state parliament with high treason and found guilty. His son, Burchard II, and his wife Regelinda were able to flee to relatives in Italy, but lost their property in Swabia and Raetia. Burchard and his brother Adalbert, the Count of Thurgau, were executed in 911.
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Burchard I (c. 850/855 – 5 or 23 November 911), a member of the Hunfriding dynasty, was a Duke of Alamannia from 909 until his death. He also held the title of a margrave of Raetia Curiensis, as well as count in the Thurgau and Baar.
Burchard was the son of Adalbert II the Illustrious, Count of Thurgau, and his wife Judith of Friuli. By 900, Burchard was already the most powerful noble in Alamannia. In a 904 deed, he appeared as Vogt administrator of the Swabian possessions of Lorsch Abbey. He succeeded the Welf scion Ruadulf in the borderlands of Raetia, mentioned as marchio (margrave) in 903 and dux (duke) in 909.
To further increase his influence, Burchard entered into a conflict with the Swabian count palatine Erchanger and Bishop Solomon III of Constance, who both were loyal supporters to the later East Frankish king Conrad I. In turn, Burchard was captured and charged with high treason. He was found guilty by a tribal council and executed, along with his brother, Count Adalbert III of Thurgau.
His son, Burchard II, and his daughter-in-law, Regelinda, left for Italy, either exiled or taking refuge. Their Rhaetian estates were lost, though later recovered. Count Palatine Erchanger proclaimed himself Duke of Swabia in 915.
About 882 Burchard married one Liutgard (possibly the Ottonian princess Liutgard of Saxony, widow of King Louis the Younger) and had the following children:
. Burchard II (d. 926), succeeded as Duke of Swabia in 917
. Dietpirch of Swabia (also known as Theoberga) married Hupald of Dillingen (d. 909).
. Odalric, count in the Thurgau and Zürichgau, had issue.
https://en.wikipedia.org/wiki/Burchard_I,_Duke_of_Swabia
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http://fmg.ac/Projects/MedLands//SWABIA.htm#_Toc359919995
http://fmg.ac/Projects/MedLands//SWABIAN%20NOBILITY.htm#BurkhardIdied911A
https://de.wikipedia.org/wiki/Burchard_I._(Schwaben)
https://fr.wikipedia.org/wiki/Burchard_Ier_de_Souabe
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860 - 911 (51 years)
