By the way, the following story is described in "Kanmongyoki" (1416 - 1448, The Diary of Zuiko-in) but it is not known whether the descriptions were true or not: The Kazainin family line became extinct, because Tadasada KAZANIN had no heir, and therefore, he secretly took custody of 'a son of Konoe in the Southern Court' (a descendant of Tsunetada KONOE, kanpaku in the Southern Court - in Japan), who later celebrated his coming of age, with a crown put on his head by Yoshimochi ASHIKAGA, seii taishogun (literally, the great general whose mission was to subdue the barbarians) and was granted a portion of Tadasada's name.
なお、『看聞御記』には、花山院忠定に相続人がおらず家門が断絶しかかったため、「南方近衛息」（南朝(日本)関白近衛経忠の末裔）を秘かに迎えて、征夷大将軍足利義持の加冠によって元服して偏諱を受けたとする記述が記されているが、真相は不明である。