小早川秀秋
Construction of Okayama Castle was started in 1573 by Ukita Naoie and completed by his son Hideie in 1597. Three years later, Hideie sided with the ill-fated Toyotomi Clan at the Battle of Sekigahara, was captured by the Tokugawa Clan and exiled to the island prison of Hachijo. The castle and surrounding fiefdoms were given to Kobayakawa Hideaki as spoils of war. Kobayakawa died just two years later without leaving an heir, and the castle (and fiefdom) was given to the Ikeda Clan, who later added Kōraku-en as a private garden.