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Family name Morong (Morong , 莫龙 , Моронг ) , all around the world, is quite a rare cognomen. The cognomen Morong is habitual in Bahrain, where it is quite a rare surname, Slovakia, and Czechia. In absolute terms, the name is most common in Philippines, Indonesia, and the United States. Much less frequently, Morong is the forename as well as the last name.