Katsumasa was assigned Shugo in Settu Province by the Muromachi bakufu (Japanese feudal government headed by a shogun) (It is said Nobunaga had proposed this to the Muromachi bakufu) and had Chikaoki ITAMI and Koremasa WADA as his retainers.
なお、勝正は室町幕府（信長の働きかけがあったとも言われている）から摂津守護に任じられ、伊丹親興、和田惟政を配下とし摂津国を治めた。