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Cognomen Longr (Longr ) , in the entire world, is an extremely rare surname. Much more prevalently, Longr is the forename as well as the last name.
לונגר, 泷儿, 珑儿, 珑兒, 窿儿, 笼兒, 胧儿, 隆儿, 龍兒, 龙儿, and 龙尔