Nagafusa was a son of Sugihara Ietsugu, an uncle of Toyotomi Hideyoshi's wife. During the Sekigahara Campaign (1600) he sided with Ishida Mitsunari and was present for the Siege of Tanabe. He avoided losing his fief through the intercession of Asano Nagamasa and after serving the Tokugawa at the Osaka Summer Campaign had his fief of Toyooka in Tajima province increased to 50,000 koku.
References
- Initial text from Sengoku Biographical Dictionary (Samurai-Archives.com) FWSeal & CEWest, 2005