His father, Takuuemon IBUKA, was a head master of Nisshinkan, a hanko (domain school) of the Aizu Domain and his mother, Yayoko, was a daughter of Tanomo SAIGO, Karo of the Aizu Doman.
父は会津藩藩校・日新館の学頭（校長）でもあった井深宅右衛門、母は会津藩家老・西郷頼母の娘の八代子。