Garrett (Gerald) FitzGibbon's wife was Mary Widenham (not Windham)[see FamilySearch for James F., b. 1780 for ref.; also in Dict. of Canadian Biography.]Based on circumstantial evidence of place, time and the name of a son, Mary's father was Henry W. of Glin, s of Henry and Catherine (Atkin) W., and grandson of Daniel W. of Ballynamoma, Co. Limerick and Ann (Maunsell) W. Daniel is brother of Henry W. from whom the Earls of Dunraven descend. Further circumstantial evidence comes from a lack of alternatives; the W.'s descend from a single progenitor in Ireland, and I have spent a number of years hunting down all of the name; its the only possibility, IMHO!