As neither his lawful wife nor his concubine gave birth to a son, Tadaharu wished his cousin Sojuro HORIO (whose father may have been Ujiyasu HORIO) to be his Matsugo-yoshi (a son adopted on one's deathbed), which was not permitted, thereby allowing the head of the Horio family to be extinct.
正室・側妾いずれとの間にも嗣子が無く、従兄弟の堀尾宗十郎（父親はおそらく堀尾氏泰であろう）を末期養子に立てることを希望したが認められず、ここに堀尾宗家は断絶した。