His family came from a line of the Miyoshi clan, a branch family of the Ogasawara clan which was of the school of Kai-Genji as a collateral line of Kawachi-Genji from Seiwa-Genji (Minamoto clan).
家系は清和源氏の一家系・河内源氏の傍系・甲斐源氏・小笠原氏の庶家である三好氏。