Previous answer is
　Hizen Kuni Saga Ju Masahiro(First generation)　

Special feature: Masahiro was a swordsmith of Hizen province.
He was born as the First son of Yoshinobu and became a son-in-law
of the First Tadayoshi. Masahiro got the title of Kawachi Daijo in 1628.
It is said that Masahiro supported exertly Omi Daijo Tadahiro
and the head family. Masahiro passed away in 1665, aged 59.
His brilliant hamon reminds us of a cumulonimbus cloud in summer.
Many sword collectors love his hamon that is rich in originality.

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Appraisal Quiz #552 (August 17th, 2019)
Who made this sword do you think ?
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Blade length : 54.8 cm or 21.57 inches.
Sori : 1.0 cm or 0.39 inches.
Mekugi : 1
Width at the hamachi : 3.11 cm or 1.22 inches.
Width at the Kissaki : 2.31 cm or 0.90 inches.
Kasane : 0.63 cm or 0.24 inches.
Shape : The blade is regular size, nice looking shape.
Jitetsu :Koitame hada well grained with jinie attach beautiful texture.
Hamon : Niedeki Suguha based hamon with thick nioikichi and notare gunome hamon.

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