Etymology and distribution of 黒髪.

Kurokami 【黒髪】^{レベル3
About 300}  The Japanese surnames etymology dictionary.

Gunma-ken · Saitama-ken · Yamanashi-ken . 権田 surname. Toukyou-to Chiyoda-ku Chiyoda was in the Edo era as the shogunate of the Edo shogunate of the government agency. 権田 Gonda reference.

※ Fukui-ken Fukui-shi major was in the Edo period in the Fukui clan of the clan office. There was a case where the same clan got renamed from Suzuta surname in the Edo period. 厳田 Iwata reference.