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Family name Castello (Castello
, كستل, קסטלו
) , around the globe, is a common surname. The last name Castello is habitual in Saint Vincent and the Grenadines, where it is quite a common surname, Italy, and Spain, where it is quite a rare surname. Not in comparison with a country's population, it most frequently occurs in Italy, Spain, and Argentina. Much less frequently, Castello is the forename as well as the last name.