Honda claimed descent from the Fujiwara clan. As shitsuji to Ieyasu and Hidetada, his activities were largely confined to civil affairs and, like his father, he has been accused of being an inveterate schemer. At the end of the Osaka Winter Campaign (1614), it was Masazumi whose men filled in the outer and second moats of the castle, in violation of the peace treaty. He was dispossessed of his lands in 1622 and died in Dewa province.
- Initial text from Samurai-Archives.com FWSeal & CEWest, 2005
- Cesare Polenghi, Samurai of Ayutthaya: Yamada Nagamasa, Japanese warrior and merchant in early seventeenth-century Siam. Bangkok: White Lotus Press (2009), 14.