Etymology and distribution of 柗井.

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

Fukuoka-ken Kurume-shi , Saga-ken Tosu-shi · Fukui-ken Tsuruga-shi .

① Convention . The first element "dragon" comes from the dragon of Ryusoji. Fukuoka - ken Kurume - shi In Shinoyama - machi tells that the descendant of Mr. Ryusuji was renamed. Estimated in the Azuchi Momoyama period. 竜造寺 Ryuuzouji reference. Fukui-ken Tsuruga-shi Shinbun no Takahiko Shrine was the shrine in the Tokyo era.

② Kyouto-fu Kameoka-shi Birth of Dogonno Ryuzo Valley (Ryusu Tani) in West Bibado Town. In Hyougo - ken tell Kyouto - fu Kameoka - shi 's crown valley at the Edo era from Harada surname. The surname is also crowded. 原田 Harada reference.