Previous answer is
　　Hizen Kuni Ju Fujiwara Tadahiro

Special feature: Oumi Daijyo Fujiwara Tadahiro was a son
of the first generation Tadayoshi　and studied the technique
from his father. After his father passed away he succeeded
2nd generation. He said his name Tadahiro not Tadayoshi during his life.
The age of his succeeded period wa 19 years af age
and helped a lot from his father's
students like Kawachi Daijyo Masahiro, Yukihiro,
Tadakuni and other students. Also under the protection of　Daimyo Nabeshima family,
Hashimoto family could obtain Holland steal
So Tadahiro school could to make Hizen blade for a long period.
Nabeshima family heavily district to export Hizen blades to other places.

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Appraisal Quiz #628 (20th Feburary 2020)
Who made this sword do you think ?
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Blade length :　63.0 cm or 24.8 inches.
Sori :1.6 cm or 0.62 inches.
Mekugi : 2
Width at the hamachi : 2.84 cm or 1.12 inches.
Width at the Kissaki : 2.21 cm or 0.87 inches.
Kasane : 0.57 cm or 0.22 inches.
Shape : Regular size Katana
with deep Sori and longer kissaki beautiful shape.
Jigane : Itame-hada well grained with Jinie attach
and Chikei work strong feeling texture.
Hamon : Niedeki Notare Gunome Midare with ashi
and sunagashi, kinsuji work. Boshi is Midarekomi style active Hamon.
Shinogiji: Itame-hada and Mokume-hada mixtured with Masanagare.

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