eldest
From LSJ
ἧς ἂν ἐπ' ἐλάχιστον ἀρετῆς πέρι ἢ ψόγου ἐν τοῖς ἄρσεσι κλέος ᾖ → of whom there is least talk either for praise or blame, of whom there is least notoriety among the men either for praise or blame
English > Greek (Woodhouse)
adjective
P. and V. πρεσβύτατος, V. προφέρτατος, πρέσβιστος.
Fem. adj., Ar. and V. πρέσβειρα (of a goddess).
because he was his eldest son: P. διὰ τὸ πρεσβεύειν ἀπ' αὐτοῦ (Thuc. 6, 55).