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Family name Sanch (Sanch ) , globally, is a rare last name. The last name Sanch is characteristic of Latin America and the Caribbean, particularly Panama, where it is quite a rare surname, the Dominican Republic, where it is a rare surname, and Uruguay. Not in comparison with a country's population, it most frequently occurs in France, the United States, and Guatemala. Also, Sanch is the forename as well as the last name.