Iehiro Tokugawa

Iehiro Tokugawa (徳川家広 and 德川家廣, Tokugawa Iehiro^?) (born February 7, 1965) is an author, translator, and the heir of the main Tokugawa house. Members of his Tokugawa clan ruled Japan as Shoguns from 1603 to 1867. His great-great-grandfather was the famed Matsudaira Katamori of Aizu, and his maternal great-great-grandfather was Tokugawa Iesato, the sixteenth head of the Tokugawa clan.

Tokugawa's patriline is the line from which he is descended father to son.

The existence of a verifiable link between the Nitta clan and the Tokugawa/Matsudaira clan remains somewhat in dispute.

...
Wikipedia