Moritaka was the eldest son of Kûki Yoshitaka, and while the latter chose to support Ishida Mitsunari in 1600, Moritaka pragmatically went off to join Tokugawa Ieyasu. As the result, and despite his father's ill-fated decision, the Kûki were confirmed in Shima province and had their income set at 46,000 koku. Moritaka later commanded ships during the 1614 and 1615 sieges of Osaka Castle.
References
- Initial text from Sengoku Biographical Dictionary (Samurai-Archives.com) FWSeal & CEWest, 2005