My great grandmother's sister Agnus Anderson married a Robert Quigg in Coleraine Ireland in the 1860's. They later lived at Letterkenny. I heard their sons were solicitors who emigrated to Canada. I have a photo of Robert and Agnus Quigg with four children (2 boys, 2 girls)probably taken about 1880. The eldest child looks about 20 and the youngest possibly 12 - 13.