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Family name Rugong (Rugong ) , across the world, is an extremely rare surname. Much more prevalently, Rugong is the forename as well as the last name.
如公, 如共, 如功, 如工, 如弓, 如恭, 如贡, 如龚, 汝公, 汝共, 汝功, 汝宫, 汝工, 汝恭, 汝拱, 汝珙, 罗功, and 罗恭
Ji, Ren, Chen, Geng, Wang, Zhao, and Zhou