He let Yorishige marry the daughter of Nobutora and attacked Nagamune OGASAWARA together, however he died of illness at the age of 67 because a tumor on his back became worse.
信虎の娘を頼重に娶わせてともに小笠原長棟を攻めたが、背中に出来た腫瘍の悪化によって67歳で病死した。