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Surname Silha (Silha ) , all around the world, is a rare cognomen. The cognomen Silha is characteristic of Czechia, where it is quite a rare surname, Austria, where it is a rare surname, and the United States, where it is a very rare surname. Measured by absolute frequency, it is commonest in the United States, Czechia, and Indonesia. Very seldom, Silha is the forename as well as the last name.