Family: O'Cathain, Prince Magnus / O'Cathain, Formaiel (F14178)
m. 1240-
Male
O'Cathain, Prince Magnus
Birth 1200 Northern Ireland 
Death 14 May 1260 Down, Northern Ireland Burial Aft 14 May 1260 Limavidy, Londonderry, Northern Ireland Marriage 1240 [1] Northern Ireland [1] Father O'Cathain, King Rory | F14179 Group Sheet Mother O'Cathain, Queen of Formaeil | F14179 Group Sheet
Female
O'Cathain, Formaiel
Birth 1200 Limavidy, Londonderry, Northern Ireland Death 1260 Northern Ireland Burial 1260 Limavidy, Londonderry, Northern Ireland Father Mother
Male
O'Cathain, King Guy Ochaan
Birth 1245 Northern Ireland Death 1303 Northern Ireland Burial 1303 Limavidy, Londonderry, Northern Ireland Spouse O'Cathain, Aonghas of Islay | F14177 Marriage
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Sources - [S789] WORLD: Family Search, Family Tree.
https://www.familysearch.org/search/tree/name
- [S789] WORLD: Family Search, Family Tree.