Although the exact year is unclear, he took the family name of Kamei after he married a daughter of Yukimori (her mother was a daughter of Hidetsuna KAMEI, the head of the chief retainers of the Amago clan) since he had a close relationship with Yukimori.
年代は定かではないが、幸盛との緊密な関係から、幸盛の娘（生母は尼子氏家老職筆頭・亀井秀綱の娘）を娶り、亀井姓を名乗るようになった。