In spite of the status of the court nobles, Motohisa JIMYOIN and his son Motomasa JIMYOIN participated in the Siege of Osaka; the father and son entered the Osaka-jo Castle and died in the final battle at Tennoji Okayama (some historian says that they escaped alive).
持明院基久、持明院基征父子は、公家の身分でありながら、大坂の役に参加し大坂城に入城し、最終決戦の天王寺・岡山の戦いで戦死した（落ち延びたという説もある）。