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Donnchad died in 1039 - "Mael Muíre ingen Gearailt married (Gofraid) mathair Don...
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Donnchad died in 1039 - "Mael Muíre ingen Gearailt married (Gofraid) mathair Dondchada (ob:1039) page: 228 in The Ban Senchus vol:ll Margaret E. Dobbs