Etymology and distribution of 横丹.

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

岡山県。オウタンも含む分布。岡山県瀬戸内市邑久町大窪に分布あり。同地に横山姓が存在。横山ヨコヤマ参照。

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

Hyougo-ken Kakogawa-shi , Ishikawa-ken Kanazawa-shi .

① Hyougo - ken Kakogawa - shi Togusakicho choke Masuda is based.

② Ishikawa-ken Kanazawa-shi It was in the Edo era in the town of Chikamadera. Tell him that he used the name of Nagaemon at the same place.

③ Toyama-ken Toyama-shi Telling that Nagai surname was in Edo era in Yao-machi Tosei-machi. 長井 Nagai reference.