He celebrated his coming of age at Gifu Castle and assumed the name "Chuzaburo Masuhide," a name which, according to one account, borrows a single kanji character from one of Nobunaga's official roles, 'Danjochu' (judge).
岐阜城で元服して忠三郎賦秀と名乗り（信長の官職である「弾正忠（だんじょうちゅう）」から1字を与えられたとの説がある。