Etymology and distribution of 實常.

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

Ibaraki-ken Omitama-shi · Toukyou-to . Ibaraki - ken Omitama - shi In Ogawa Ibaraki - ken tells that he changed his name from Yokosuka 's surname in around 1877 to avoid conscription in Naka - gun. There is also a story that the meaning is unknown in the same place. 横須賀 Yokosuka reference.