It may likely be that the Jewish population in Hungary which uses the name VARGA adapted it in Hungary, a practice which was common, as you can see from the writings of Alexander Beider Phd (in Jewish studies) in his book, A Dictionary of Jewish Surnames
The great majority of European Jews took their surnames from the end of the eighteenth century to the middle of the nineteenth, when state legislation required the adoption of hereditary names. The first law was promulgated in 1787 by Emperor Joseph II and was applied to all Jews of the Habsburg Empire, most of whom lived in Galicia. Jews were free to choose their names subject to approval of Austrian officials. If a Jew had not chosen a name, one was assigned. The choice depended only on an Austrian official’s imagination.
Almost all names were based on German words. Many referred to occupations, and others designated personal qualities. The most populous category, however, consisted of artificial names drawn directly from various lexical layers of the German language and unrelated to characteristics of their first bearers. Among these were names of flora and fauna, metals and stones, natural phenomena, food, and household utensils. In many names of that group one can distinguish unmistakable ornamental elements: they are drawn from words that have positive associations. This is particularly true of names derived from adjectives: Ehrlich, Rechtschaffen, and Redlich (honest); Freundlich (friendly); Frisch (fresh); Fröhlich (happy); Geduldig (patient); Glücklich (lucky); Herzlich (warmhearted); Lieblich (charming); Superfein (top-quality); and Tugendhaft (virtuous). For other names, the semantics is neutral. Derogatory names exist as well, though their proportion is small. Among the examples are Deligtisch (criminal), Geschwür (ulcer), Kaker (crapper), Harn (urine), Niemand (nobody), Affengesicht (monkey’s face), Bleichfrosch (pale frog), Schmutzbank (dirty bench), and Wanzreich (rich in bugs, or realm of bugs).
The derogatory names at the end of his list are interesting as this occurred in many countries among many ethnic groups and is thought by many to to a form of protest used when civil authorities required people to take surnames