Etymology and distribution of 上任.

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

Ishikawa-ken , Oosaka-fu . Distribution including taikei as well. Thing . From the tub (orchestra). In Ishikawa - ken Hakusan - shi 's Mikawa tell the Meiji New Last Name who used the character in the turtle of the sink of a tub with a trough.