 Darerca was at least twice married.Among her husbands, according to histories in Brittany, she was the second wife of Conan Meriadoc and the mother of his eldest son, Gradlon Mawr who became Gradlon the Great, King of Brittany.Darerca's second husband, Chonas the Briton, founded the church of Both-chonais, now Binnion, Parish of Clonmany, in the barony of Inishowen, County Donegal.