1, according to the theory of "husband" and "customs through righteousness" contained:'s in home ownership, guo, garden city, pool is also."Guo" is the ancient capital of outside wall.

2, according to "yuanhe surname code" contained, king wen of zhou JiDi GuoShu by sealing in the sphere.Or "Guo Gong" (the ancient Guo, guo word homophones) because of the thought's.According to "tang book. Prime minister genealogy table" contained, king wen of zhou Wen Wangzhi brother GuoShu in west Guo, sealing GuoZhong east Guo."Guo", means "Guo" acoustic transfer also, because of the thought's.Sphere, namely Guo Guo.DongGuoGuo in today MengYang county of henan province area, by zheng in 765 BC, also known as "city state", the western countries in the east of baoji city in shaanxi province, the western zhou dynasty, after the race is leave a place called "guo", merged by qin in 687 BC.North nation Yu Shangyang (this southeast 陜 in henan province) occupied today henan sanmenxia and pinglu county, Shanxi Province, in 655 BC, was destroyed by the state of jin.After several children, both at the kwok.

3, after the Uighur settled in the central plains in tang dynasty, the surname "guo", from "the prince zhongwu of fenyang" name.