Nishimoto 【西元】5 The Japanese surnames etymology dictionary.
Ehime-ken . Occupation . Ehime-ken Seiyo-shi Nomura Town Tell that Mr. Doi, who was in the Warring States period in Kamada Castle in Toriokano, got from Saionhiro Saionhiro, a warrior of warring States and Azuchi-Momoyama era, by warfare in 1584 (Tensho 12). In interpretation by estimation, the soldier of the first element is "soldier", the head of the second element is "headgear". 土居 reference.