Tametō is a Province smith of the late period, resident in Karakawa, a locality on the border with . His signed and dated bearing the inscription " no Karakawa-jū Saemon no Jō Sugawara Tametō" with a Bunpō 1 (1317) date inscription stands as the principal reference for his identity. The Meizukushi treats him as one who drew upon the lineage of Fukuoka Korekuni, "but in fact this is not clearly established," and multiple expert assessments concur that his lineage and other details remain unclear. Extant signed works by Tametō are extremely few, lending particular importance to the small corpus that survives.
His display a slender profile with pleasing and slightly extended , characteristic of classical form. The is a tightly forged upon which appears distinctly. The is fundamentally -based in , with an admixture of , , and ; enter well, appear, and adhere. In certain works the shows , a moist quality within the temper line. His are wrought in with and fine accompanied by shallow , sometimes bearing tō- carved through on both sides.
The notes that because his signed works "are for the most part constructed as with an admixture of -," traditional attributions on unsigned blades exhibiting this pattern "may be accepted." Works by or attributed to Tametō have entered the Imperial Collection and are recorded in such major references as Kōzan , Kantō Zuiroku, and Nihontōkō Jiten. Despite the scarcity of his oeuvre, the consistent quality of his forging and the clarity of his confirm his standing as a smith of note within the late tradition.