Previous answer is
Hizen no Kuni Ju Omi Daijo Fujiwara Tadahiro
肥前国住近江大掾藤原忠広

Features: Hizen no Kuni Ju Omi Daijo Fujiwara Tadahiro, born Hashimoto Heisakuro, was the son of the first generation Tadayoshi.
After his father's death, his works started to appear around Kan'ei 10 (1633), and he received the title of Omi Daijo in Kan'ei 18 (1641) at the age of 29.
His peak period is said to have been during the Shōhō and Keian eras.
He never assumed the name Tadayoshi, continuing to sign as Tadahiro throughout his life.
He was granted a residence and 20 koku of rice by the domain, contributing significantly to the development of Hizen swords.
He lived a long life, with a working period spanning approximately 60 years, and produced a large number of works in various styles.
He passed away at the age of 80 in Genroku 6 (1693).
His swords are renowned for their sharpness and are classified as O-Wazamono.
His work is considered the finest among Hizen swords for the beauty of its jigane, and he is highly regarded as a master, second only to his father Tadayoshi.

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Appraisal Quiz #810 (August 31th, 2024)
Who made this sword do you think ?
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Blade Length: 67.1 cm (26.42 in)
Curvature: 1.0 cm (0.39 in)
Mekugi Holes: 3
Width at Base (Motohaba): 3.18 cm (1.25 in)
Width at Yokote: 2.18 cm (0.86 in)
Thickness: 0.68 cm (0.27 in)
Sword Weight: 785 grams (1.73 lbs)
Shape: The blade has a slightly wide body and a thick spine, with a shallow curvature, the kissaki with bohi (grooves) on both sides.
Jigane: The steel is a well-forged ko-itame mixed with small mokume, resulting in a refined grain with visible utsuri.
Hamon: Suguha with ko-ashi entering the pattern, with a rounded boshi that returns along the edge.

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