Saints Cosmas and Damian were twins born to Christian parents in Arabia, in the third century. They lived in the region around the border between modern day Turkey and Syria. …[The brothers] were physicians who were renowned for their skill as well as their refusal to charge for their services. Before beside manner was a “thing”, they had a loving and respectful way, and for this reason, they were called by the Church “unmercenary physicians” (Anargyroi in Greek).
Their charity and Christian witness won many converts to the faith and earned them a place of prominence in the Christian communities of Asia Minor. Therefore, when the Diocletian persecutions began in the latter half of the third century they were of some of the first to be sought out for execution.