At the end of Edo period, Kounsai TAKEDA, who disliked the family name Atobe because it reminded him of the betrayal of the master family, reverted the family name to Takeda with the approval of his lord Nariaaki TOKUGAWA.
幕末時に主家に叛いた跡部姓を嫌った武田耕雲斎が主君徳川斉昭に願い出て、本姓である武田姓に復姓を果たした。