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Family name Luogen (Luogen ) , all around the world, is an extremely rare last name. Much more prevalently, Luogen is the forename as well as the last name.
Lugen, Luugan, 洛根, 箩根, 罗根, 羅根, 落根, 锣根, and 骆根
Ma, Wu, Xu, Guo, Fan, Zhu, Xie, Rong, Tong, and Wang