Hi; I don't want to put a wrench in your searching as I know how difficult it is to find family information in Ireland. Elizabeth Patterson Cully is the twin sister of David Cully children of Robert Cully and Agnes Eliza Hadden. She died shortly after birth and David died at almost 21 years old. My Cully family have Johns, Wms and Roberts in it. It doesn't look like you have too many Cully roots. My grandfather was born in co Armagh and as a family they moved to Belfast. Hope you find your grandmothers family. Good luck.