 Kuroda Yoshitaka and his son Nagamasa supported Ieyasu in combat, and were rewarded for their service with a transfer to the Fukuoka Domain, rated at 520,000 "koku" of land.Two branches of the family were founded in 1623.Kuroda Nagamasa's 3rd son Nagaoki founded the first; he was given 50,000 "koku" of land which became the Akizuki Domain.