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Family name Grubb (غراب , Grubb , 格拉布) , in the entire world, is a common surname. The cognomen Grubb is characteristic of Palestinian Territory, where it is quite a common surname, Egypt, and Yemen, where it is quite a rare surname. Measured by absolute frequency, it most frequently occurs in the United States, Egypt, and Yemen. Much less frequently, Grubb is the forename as well as the last name.