His father was Sukehira TAKATSUKASA, who was the 4th son of Imperial Prince Kaninnomiya Naohito, and was later adopted by Mototeru TAKATSUKASA and took over the Takatsukasa family of Fujiwara cognomen.
父は閑院宮直仁親王第4王子で、鷹司基輝の養子となり藤原姓鷹司家を継承した鷹司輔平。