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Last name Ilovan (Ilovan ) , globally, is a rare surname. The last name Ilovan is habitual in Romania, where it is quite a rare surname, Ireland, where it is a rare surname, and Spain, where it is a very rare surname. Not in comparison with a country's population, it is the most numerous in Romania, Italy, and Spain. Much less frequently, Ilovan is the forename as well as the last name.