Hello,
researching the Guldin family, which appears in St. Gall in the early 1500s (trial of Nikolaus for Anabaptism in 1525, entry in citizen registration book for Melchior, Balthasar, Ulrich, Gallus and Caspar, with births of their children noted in the late 1520s), it was suggested that there are Guldin/Gulden families in the Hungarian church records from 1626. I expect that the expansion of Hapsburg influence into this region (officially incorporated in Hapsburg empire in 1526) may have caused some migration. Is there ANY chance of finding reliable sources for this period?