Yorisada's 9th son Nobuyoshi TODA, was Izu no kami (Governor of Izu Province) and a first for the Toda clan, established strongholds in Owari Province and gradually extended his influence to Mikawa Province.
頼定九男　伊豆守戸田信義にはじまる戸田氏は当初、尾張国に拠点を置いていたが、次第に三河国に勢力を拡大した。