Do you have their arrival manifest?
the DUNARs that show up in NY Ellis Island site most of them are from Nagylevard, Hungary which is Velke Levare, Slovakia.
Dunar, Samuel Naglevar, Austria 35 1878 1913
Dunar, Samuel Gr Schetzen 34 1871 1905
Veľké Leváre, Slovakia
1773 Magno-Levardinum, Nagy-Lévárd, Gros-Schützen, Welke Lewardy, 1786 Nagy-Leward, Groß-Schützen, 1808 Nagy-Lévárd, Groß-Schützen, Hrubé Lewáre, Weliké Lewáre, 1863–1913 Nagylévárd, 1920 Velké Leváry, 1927– Veľké Leváre [all the names this location was known by]
DUNARs still in Velke Levare [phone book]www.zoznamst.sk