Moreover, since Yorinobu TOKUGAWA, the founder of the Kishu Tokugawa Family, and Yorifusa were brothers by the same mother (Yorinobu was the older), the Mito family had been considered to be a branch of the Kishu family for a while after its foundation.
さらに、紀州徳川家の祖である徳川頼宣は同母兄であるので、ある時期まで紀州家の分家であると考られていた。