Yoshitsuna (吉綱) is a smith of the late period whose signed works place him in the Umanori district of Bingo Province, an area on the northern edge of the old Anna District in what is now Fukuyama City, Hiroshima Prefecture. Sword reference works () record a Yoshitsuna regarded as a student of Kunitsugu, active from the early period onward. The reading of the place-name in his inscription was long debated: the characters were formerly misread as "Maki" and associated with Makimura near the Ukaishō district of , but subsequent research re-evaluated the second character and established the reading "Umanori." A regional connection to Kokubunji Sukekuni, who was active in Tōjō within the district during the period, is strongly suggested by shared stylistic features, further strengthening this identification. Fuller details of his lineage must await future research, as surviving examples and related documentary materials have still scarcely come to light.
The extant work bearing his signature displays mixed with , with running grain in places, thickly applied with , and a slightly mottled (-like) texture within the surface steel; faint appears. The is fundamentally , mixed with , , and , with well-entering and ; the is deep, with , accompanied by , uchi-noke, and -like effects, together with and . The is straight with and a very slight turnback. The overall workmanship reveals a blend of temperament and Yamato coloration consistent with the collateral lineages of Bingo Province, and shows a thread of affinity with the work of Kokubunji Sukekuni.
Both and are (sound and well-preserved), with ample and a broad, powerful form exhibiting high and clear characteristic of the late period. The is , and the dated inscription of Gentoku 3 (1331) is of considerable documentary value. Surviving works by this smith are extremely rare, rendering each example precious both as a study of provincial -related forging traditions and as primary material for the still-incomplete record of swordsmiths working in Bingo during the late period. The blade was transmitted within the Tokugawa family during the domain-administration era.