This name was created by combining the character of 義, which was the tsuji (distinctive character used in the names of all people belonging to a single clan or lineage) of the Shogun family, and 満, which was the tsuji of the Shibukawa clan, and was given to Yoshimitsu as a henki (name including one character of the name of a shogun or a daimyo).
将軍家の通字の義の字に渋川氏の通字・満の字を合わせて偏諱として受けたもの。