http://www.wikitree.com/wiki/Mac_Lochlainn-2
Finnguala [uncertain] (Finola) "Fionghuala" Mac Lochlainn aka O'Neill
Born about 1140 in Ulster, Irelandmap
Daughter of Murcertac O'Neill and [mother unknown]: Wife of Niall (ONeill) O'Neill — married [date unknown] [location unknown]
Sister of Malachy O'Neill
Wife of Godred Olafsson — married [date unknown] [location unknown]
Mother of Ragnvald (Godredsson) Gudrodsson, Affrica Aufrick The Isle (Godredsdottir) Godredsdotter, Finnguala (ONeill) MacGillean, Olaf II the Black V (Guðrøðarson) Gudrodsson and Ivar Olafson
Died about 1180 in Isle of man, England
http://www.wikitree.com/wiki/Olafsson-29
King Godred (Godred II - Ochraidh) "Guðrøðr" Olafsson aka King of the Isles, King of Dublin,
Born about 1135 in Isle Of Manmap
Son of Óláfr (Guðrøðarson) Gudrødsen and Affrica (Galloway) de Galloway
Brother of Rögnvaldr (Olafsson) Óláfsson, Ragnhilda (Olafsdatter) Olafsdottir, Dougal of Lorne, Harald (Olafsson) Man, Gudrød IV Olafsen II and Afuca (Gudrødsen) Curzon
Husband of Finnguala Mac Lochlainn — married [date unknown] [location unknown]
Father of Ragnvald (Godredsson) Gudrodsson, Affrica Aufrick The Isle (Godredsdottir) Godredsdotter, Olaf II the Black V (Guðrøðarson) Gudrodsson and Ivar Olafson
Died Nov 1187 in Isle Of Man
https://en.wikipedia.org/wiki/Godred_Olafsson
and Guðrøðr returned to the Isles. This episode may have bearing on Guðrøðr's marriage to Findguala ingen Néill, Muirchertach's granddaughter. In 1170, Dublin fell to an Anglo-Irish alliance
http://db.poms.ac.uk/familytrees/4/