De Lacy
Rose was one of some thirteen children of King of Ireland, Ruaidrí Ua Conchobair. About 1180 she married Hugh de Lacy, Lord of Meath (before 1179 to 1186). De Lacy had five daughters and two sons by his first wife Rose de Monmouth. Rose Ní Conchobair was the mother of two more children, William Gorm de Lacy and Ysota de Lacy.