Saints Pistus, Agapius, and Theognis were the sons of St Bassa, and lived in the city of Macedonian Edessa. From childhood they had been raised in the Christian Faith, but their pagan father denounced his wife and chldren to the governor. In spite of threats, they all refused to offer sacrifice to idols.
The youngest son Pistus was tortured and beheaded, just as his brothers had been.
One account says that the three brothers suffered at Edessa in Macedonia. Another account says they died at Larissa in Thessaly, their homeland.