He was born to noble Vicovarian pair, Seneschal Ceallach Dyffryn aep Gruffyd and his wife Mawr, in the family's stronghold, Darn Dyffra. He also had a lot of siblings, notably brothers Dheran, Aillil and three sisters. Among the mages, he was related to Assire var Anahid, his great-aunt. At some point in his life his skills were recognized by Nilfgaaardian Intelligence, maybe thanks to his father's position at court, and he joined its ranks later becoming an officer. He was also given the title of count.