I might be able to help you. My mother was a Bridget Ivory from Passage East Co. Waterford, daughter of Patrick Ivory of Raheen, Passage East Co. Waterford. My grandfather had a brother William that moved to Dublin, and had sons I think Dennis and Thomas. I have met them on a few occasions but do not know of anything about their respective familys'. Hope this is of some help. The Ivory name has been established in Co. Waterford for many hundred years.