Family Name: The surname 欧 (ōu) originates from the ancient place name 欧余山 (Ōuyú Shān). It is derived from the descendants of Emperor Shaokang of the Xia Dynasty. Shaokang's son Wuyu was granted lands south of Ōuyú Shān, and his descendants adopted the surname 欧. Another theory suggests that 欧 is a branch of the 欧阳 (Ōuyáng) clan, with some members changing their surname to 欧.
Given Name: West symbolizes vastness and journey, while Yin signifies the continuation of family lineage.