Etymology and distribution of 清天.

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

Ehime-ken , Hokkaidou , Kagawa-ken . 都筑 's variant. Nagano-ken Matsumoto-shi Marunouchi says that the clan's clan of the clan government changed the name from Suzuki surname in the Edo period due to the lord's lord. 鈴木 Suzuki reference.