Etymology and distribution of 苑.

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

Kagawa-ken · Chiba-ken . Tottori-ken Hino-gun Hino-chou The rain showed its origin.

※ Sina series . Heteromorphic of 湯 . From the toe of the Japanese sound of Yu. There is a record of naturalization on Toukyou-to Minato-ku on April 11, 1977. The real name is Yu. 湯 Tou reference.

※ Fukuoka-ken Chikujou-gun Kouge-machi Originated from Kamihara / Shimogatabara area (formerly known as Tou). A place name with a record since the Nara period. The place name was also written as "tower". Fukuoka-ken Eastern · Ooita-ken Northern part (formerly: Buzenki) had the surname of the tower in Asuka period.

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

Oosaka-fu , Mie-ken Matsusaka-shi . Because I put Ogi in estimation.