Etymology and distribution of 清天.

Seiten 【清天】^{レベル1
Very rare}  The Japanese surnames etymology dictionary.

Aichi-ken , Tochigi-ken , Kyouto-fu .

① 都筑 's variant.

② Birth of Kyouto-fu Sakeki-gun. A place name with a record since the Nara period. The place name was also written as "Tubular", "Tsutsuke", "Tube wood", "Tsubame".