The name derives from the Chinese surname 郭, which is pronounced Guō and gwok3 in the dialects of Mandarin and Cantonese respectively.
In Japanese, the surname Quach is: Kuoko, Kaku or Kuruwa (くるわ/ かく )[citation needed] and in Korean: Gwak (곽).
Quach came from the surname Guo which is believed to have originated from Shanxi[1] province of China.
Eventually it spread to Chaozhou, also known by its postal spelling of Teochew, a city in the eastern part of China's Guangdong province.
A subordinate of Bỉnh Di named Quách Bốc, just after being informed, led his army battering the Đại Thanh Gate of the citadel down to save his governor.