ἀρχέτης

From LSJ

ἐν ταῖς ἀνάγκαις χρημάτων κρείττων φίλος → it is better in times of need to have friends rather than money, a friend in need is a friend indeed (Menander, Sententiae monostichoi 143)

Source

Middle Liddell

a leader, prince, Eur.: as adj., ἀρχ. θρόνος a princely throne, Eur.