He was born in 1540 in Kobori Village, Sakata County, Omi Province (present-day Nagahama City, Shiga Prefecture); although he once became a priest he returned to secular life and married a daughter of Kazumasa ISONO.
天文(元号)9年（1540年）近江国坂田郡小堀村（現・滋賀県長浜市）に生まれ、一旦は出家しているが還俗して磯野員正の娘と結婚している。