 Measuring the historical ethnic "charge" of a surname has certain specific features, as, for example, there were many surnames made from the same Christian names and Slavic-form suffixes used by Lithuanian, Belarusian, and Polish speakers.Surnames could also be made from a Lithuanian root and a Slavic suffix, a Belarusian-characteristic root and a Polish-characteristic suffix, and so on.The official spelling of the Polish (and any other non-Lithuanian) name in person's passport is governed by the 31 January 1991 Resolution of the Supreme Council of Lithuania No.