Ancaeus, son of King  Lycurgus of Arcadia, was both an Argonaut and a participant in the Calydonian Boar hunt, in which he met his end. His arms were ominously hidden at home, but he set forth, dressed in a bearskin and armed only with a labrys (λάβρυς "doubled-bladed axe"). His wife was named Iotis, and his mother was either Cleophyle or Eurynome according to one account, or Antinoe according to another one. Ancaeus' son Agapenor led the Arcadian forces during the Trojan War.