Etymology and distribution of 平方.

Hirakata 【平方】^{レベル5
About 2,600}  The Japanese surnames etymology dictionary.

Gunma-ken , Kanagawa-ken , Toukyou-to .

① variant of 重原 . Gunma-ken Takasaki-shi Yoshii Town Kamorihira is based. I will tell him from Mobara of Aichi-ken eastern part (formerly Mikawa country) in the same place. 重原 Shigehara reference. Hiroshima-ken Fukuyama-shi Tell her that she was engaged in agriculture in Shinabe-cho Mitani. Estimated in the Edo period. Shigehara in the same place.

② Korean type . There is a record of naturalization on Toukyou-to Katsushika-ku on February 23, 1954. There is a book containing "Shigeru". The real name is Li. 李 Ri reference.