Etymology and distribution of 安出川.

Adekawa 【安出川】^{レベル1
Very rare}  The Japanese surnames etymology dictionary.

Saitama-ken Chichibu-shi . Summary . Abbreviation for Nikiko. The first element is from Nyiko's "Nun". Tell her that she disguised Nyiko. Estimated in the Azuchi Momoyama period. Saitama-ken Chichibu-shi Distributed in Onohara. Last name was also written as "Nyiriha". It is unknown whether the mound angle exists. 尼子 Amako reference.