He was the grandson of Nobutaka TAKEDA and was a bushi (samurai) with the name of Shinshiro TAKEDA, but he changed the family name of Takeda (武田)to Takeno (武野) (according to the phrase that '田' [paddy field] changes to '野' [field]).
武田信孝の孫で、武田新四郎の名を持つ武士であったが、武野に改姓（「田、変じて野となる」の謂）した。