Nobusada was a member of the Oda clan of Shugodai (Deputy Millitary Governor) of Owari Province, and as a branch family of 'the Oda Yamato no Kami family' (the Kiyosu ODA clan) of Owarishimoyongun Shugodai, he served as one of the three magistrates of Kiyosu, a senior vassal of the master's house.
信定は尾張の守護代織田氏の一族で、尾張下四郡守護代の「織田大和守家」（清洲織田氏）に仕える庶流として、主家の重臣たる清洲三奉行の一人であった。