Deichtine's mother was Maga, daughter of Oengus Og, and her father was Cathbad the Druid. Her sisters were Finchoem, mother of Conall the Victorious, and the mother of Naiose and his brothers. Although Conall the Victorious was a bitter enemy of Anluan and Cet mac Maga, they were his maternal uncles. Cet even protected the pregnant Finchoem until she gave birth and it was prophesied that Conall would be his slayer.
