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Surname Trojakova (Trojakova , Троякова ) , worldwide, is a rare family name. The last name Trojakova is habitual in Eastern Europe, particularly Slovakia, where it is quite a rare surname, Czechia, where it is a rare surname, and Belarus, where it is a very rare surname. Measured by absolute frequency, this name is the most popular in Eastern Europe, particularly Czechia, Russia, and Slovakia.