Twenty-first Son: Narikatsu TOKUGAWA (1820 – 1849), adopted into the Shimizu-Tokugawa family as the adopted son of Nariyuki TOKUGAWA, head of the Kishu-Tokugawa family
二十一男：徳川斉彊（1820-1849）清水徳川家、後に紀州徳川家当主・徳川斉順の養子