When he was twenty one years old, while he was a Rear Admiral candidate student, he was demoted from nobility to subject and he established the family of Marquis Komatsu. (He succeeded the ritual of the Komatsunomiya family.)
21歳で海軍少尉候補生の時に臣籍降下し小松侯爵家を創設する（小松宮家の祭祀を承継する）。