On May 6, 1175, after his genpuku (coming of age) ceremony as an adopted child of his uncle Motofusa MATSUDONO, he was appointed as Jugoinojo (Junior Fifth Rank, Upper Grade).
承安(日本)5年4月7日(旧暦)（1175年）、伯父松殿基房の猶子として元服を行い従五位上に叙せられる。