patriarch (n.) Look up patriarch at
late 12c., from Old French patriarche "one of the Old Testament fathers" (11c.) and directly from Late Latin patriarcha (Tertullian), from Greek patriarkhes "chief or head of a family," from patria "family, clan," from pater "father" (see father (n.)) + arkhein "to rule" (see archon). Also used as an honorific title of certain bishops in the early Church, notably those of Antioch, Alexandria, and Rome.