Masatomo's father was originally a vassal to Katsuie SHIBATA, but became a ronin (masterless samurai) following his lord Katsuie's death at Kitanosho-jo Castle in Echizen Province due to lost battle against Hideyoshi TOYOTOMI.
もともと政友の父は柴田勝家の家臣だったが、主君勝家が豊臣秀吉との戦いに敗れて、越前北ノ庄城で自刃したため、政友の父も浪人の身となった。