one of the Argonauts:
Moreover from Arcadia came Amphidamas and Cepheus, who inhabited Tegea and the allotment of Apheidas, two sons of Aldus; and Ancaeus followed them as the third, whom his father Lycurgus sent, the brother older than both
the father of Clitonymus:
At Opus, in a quarrel over a game of dice, Patroclus killed the boy Clitonymus, son of Amphidamas, and flying with his father he dwelt at the house of Peleus and became a minion of Achilles.
a son of Busiris, killed by Heracles: Apollod. 2.5.11
....After Libya he traversed Egypt. That country was then ruled by Busiris, a son of Poseidon by Lysianassa, daughter of Epaphus. This Busiris used to sacrifice strangers on an altar of Zeus in accordance with a certain oracle. For Egypt was visited with dearth for nine years, and Phrasius, a learned seer who had come from Cyprus, said that the dearth would cease if they slaughtered a stranger man in honor of Zeus every year. Busiris began by slaughtering the seer himself and continued to slaughter the strangers who landed. So Hercules also was seized and haled to the altars, but he burst his bonds and slew both Busiris and his son Amphidamas.