Etymology and distribution of 曾々木.

Sosogi 【曾々木】^{レベル2
About 10}  The Japanese surnames etymology dictionary.

Toukyou-to . Korean type . 鄭 's variant. Disassembled "Zhen". There is a record of naturalization on Toukyou-to Shinjuku-ku on 2 February 1983. Zheng the real name. 鄭 Tei reference.