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Family name Longmeng (Longmeng ) , in all the world, is an extremely rare cognomen. Predominantly, Longmeng is the forename as well as the last name.
珑梦, 胧朦, 隆孟, 隆檬, 隆猛, 龙孟, 龙朦, 龙梦, 龙猛, 龙盟, 龙萌, 龙蒙, 龙蠓, and 龙锰
Li, He, Wu, Cui, Lei, Fan, and Huang