'Harumoto' was received the characters in his name after the 12th Shogun, Yoshiharu ASHIKAGA, however, since he and Yoshiharu were at first hostile to each other, he identified himself as 'Rokuro HOSOKAWA' for a long time.
「晴元」という名は12代将軍足利義晴の一字を貰いうけたものであるが、当初は義晴と敵対関係であったため、「細川六郎」という通称を長く用いていた。