Tamehito was originally called Katsuhiko MATSUO but, on marrying Kimiko REIZEI, Tameto's daughter, changed his name through the family courts to become the twenty-fifth head of the Reizei family.
旧姓名は松尾勝彦であったが、為任長女冷泉貴実子の婿として第25代当主を継承するために、家裁手続きを経て現姓名に改めた。