Nicene and Post-Nicene Fathers, Ser. II, Vol. III: The Ec...
When I undertook the direction of the see of Cyrus, I procured for it from all directions men who practised necessary arts, and besides this induced skilful physicians to live there. Of these one is the reverend presbyter Peter, who practises his profession with wisdom, and adorns it by his character. On my departure, several have left the city and Peter also has determined to leave. Under these circumstances I beseech your excellency to give him your kind care. He is well able to attend the sick and to wage war against their ailments.