After the death of Sisinnius, Chrysanthus was constrained to take upon him the episcopal office. He was the son of Marcian the predecessor of Sisinnius, and having had a military appointment in the palace at an early age, he was subsequently under Theodosius the Great made governor
Christianity · Church History · Ecclesiastical History
Book VII, Ch. 12 — Of Chrysanthus Bishop of the Novatians at Constantinople.
Ecclesiastical History · Socrates Scholasticus