Family: O'Cathain, Eachmarcach / MacErc, Meardda (F14181)
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O'Cathain, Raghnaill (1090-1138)
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| O'Cathain, Eachmarcach (1125-1195)
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MacErc, Meardda (1123- ) |
O'Cathain, King Donal (1150- )  |