Castor of Apt was a 4th-century bishop in Gaul who was born in Nîmes. After studying in Arles, he practiced law and successfully defended a widow and her daughter in court. Following the death of his mother-in-law, he and his wife transitioned into religious life. He established the monastery of Saint-Faustin in Provence, which adhered to the rules of John Cassian. He later served as a bishop and was involved in a synod called by Pope Boniface I to address ecclesiastical matters.
Life and career
After his legal career, Castor entered monastic life and eventually accepted the role of abbot through obedience to his predecessor. As a bishop, he maintained contact with other religious leaders, notably requesting John Cassian to document the customs of Egyptian and Palestinian monks. Historical records from 419 indicate he was among the bishops summoned by the Pope to attend a synod regarding the Bishop of Valence.
Veneration
He is recognized as a saint in several Christian traditions, including Catholic, Orthodox, and Anglican. His remains are kept in the cathedral of Apt, where he is honored as one of the cathedral's patrons. His feast day is observed on September 21.