I beleive we are searching for the same branch of Finlays. I an decended from a Katherine Finlay who married William Eager around 1803. William fought in the 1789 rebllion, and fought for the governemnt againet the rebels, along with Katherine's three brother, at the Battle of Hacketstown.
According to my granny's great aunt, Mary Jane Eager, who was the family historian, 'When the Pike men were defeated that day, some of them on their way home, to be of help in Dunlavin, met old Mr Finlay at Ballinabarney Bridge - he was on his way home from the hill where he had been seeing to his sheep during the adsence of his two sons. He asked them how the day had gone - he was anxious for news of his sons - I suppose he met their spite after their defeat - they murdered the old man on Ballinabarney Bridge and then went down to his house, turned out his three daughters (one of which was Kate ...) and set the house on fire.
Katherine also brought the name Germain (e) into the Eager family, and since it was introduced it has been used in every generation.