Although the year of death is unknown, he seems to have been younger by around fifteen years than his older brother and as old as or slightly younger than Masamoto HOSOKAWA, judging from the year of birth of his father Motoie (1432-1509) and the incident about him being adopted by his older brother Takakane FUKASE.
その没年は不詳だが、父の元家（1432～1509年）の生年と、兄の深瀬隆兼の養子となった件から、兄と興仙は年齢が15歳程度は違った兄弟で、細川政元と同年代かやや年下だと推測される。