Etymology and distribution of 辰沼.

Tatsunuma 【辰沼】^{レベル2
About 10}  The Japanese surnames etymology dictionary.

Toukyou-to Machida-shi . Manche system . Originated from Changpai Shan in Jiangsu Province, People's Republic of China, Jilin Province, Democratic People's Republic of Korea. From the thing that the same place tells it as the ancestral place. Naturalized on Toukyou-to Machida-shi on 4th October 1991. The real name is king. 王 Ou reference.