λύπης ἰατρός ἐστιν ὁ χρηστὸς φίλος → a true friend is grief's physician, a worthy friend is a physician to your pain
P. and V. πάτριος, πατρῷος, Ar. and P. πατρικός.
congenital: P. σύντροφος, P. and V. σύμφυτος, ἔμφυτος, V. συγγενής, σύγγονος.