- Japanese: 肥前 忠吉 (Hizen Tadayoshi)
Hizen Tadayoshi was the name taken in succession by a line of prominent Edo period swordsmiths.
Though formal samurai exchanges of swords as gifts typically took the form of older (pre-Edo) swords, when Edo period swords (shin-tô, lit. "new swords") were given, they were often blades made by Hizen Tadayoshi.
- Mori Yoshikazu 母利美和, "Buke girei to tachi" 武家儀礼と太刀, Gekkan bunkazai (1989/8), 36.