Etymology and distribution of 天孝.

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

Ehime-ken . Estimated from Mr. Ono's second son. Ehime-ken Oozu-shi Distribution exists in upstream Kawabe-machi. 小野 Ono reference.

※ Kanagawa-ken Naka-gun Ninomiya-machi It was in the Edo era on river scent.