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Surname Quadra (Cuadra , Quadra , Cadril) , all over the world, is a common last name. The last name Quadra is characteristic of Latin America and the Caribbean, particularly Nicaragua, where it is a common surname, El Salvador, where it is quite a common surname, and Costa Rica (explore the name in all countries). In absolute terms, it most frequently occurs in Philippines, Nicaragua, and Brazil. Very seldom, Quadra is the forename as well as the last name.