In Greek mythology, Leucippus (Ancient Greek: Λεύκιππος "Leukippos," "white horse") was the eighth king of Sicyon who reigned for 53 years.
Family.
Leucippus was the son and heir of King Thurimachus, son of Aegyrus, son of Thelxion, son of Apis, son of Telchis, son of Europs, son of Aegialeus (an autochthon). 
Mythology.
According to Pausanias' account, Leucippus had only one child, a daughter Calchinia. She bore Poseidon a son, Peratus, who was reared by Leucippus and inherited the kingdom. In some account, Leucippus was succeeded by Messapus as the ninth king of Sicyon.