Source: SS - Sarah Finlay married Robert Thomson 9/19/1863.
From SS:
9/19/1863 Sarah Finlay, Kiltinney, married Robert Thomson. Her father, John, was a farmer. Robert was a widower from Ballyvennox, Macosquin and one of the witnesses was a James Thompson.
It is strange that Sarah is the only child of John Finlay NOT to be married from the family home in Ballystrone. Also, there IS a family of Finlays in Kiltinney, so this Sarah may NOT be a daughter of my John Finlay. The source for there being a Sarah at all is SS using family lore.
James Thompson is the ONLY Thompson living in Ballyvennox by 1901; he is a 58 year old farmer and unmarried. Is this the same James who witnessed Sarah's marriage and does this suggest that Sarah and Robert have moved - perhaps emigrated? BB could not find them arriving in the US nor in any US censuses.