Katsuyori succeeded the family name of the Suwa family in July or August (June in old lunar calendar) in the same year, and changed his name to Suwa Shiro Katsuyori, by adopting the Suwa clan's tsuji (distinctive character used in the names of all people belonging to a single clan or lineage) "頼" (he did not succeed the Takeda clan's "信," which claims attention).
勝頼も同年6月に諏訪家の名跡を継ぎ、諏訪氏の通字である「頼」を名乗り諏訪四郎勝頼となる（武田氏の通字である「信」を継承していない点が注目される）。