Dunay Family History

Hungarian: habitational name for someone who lived in a settlement on the Danube river (Hungarian Duna). In some cases the name may simply be ornamental. Ukrainian: see Dunaj 1. Jewish (Ashkenazic): variant of Dunaj 2. Possibly an Americanized spelling of the unexplained French surname Duné or Dunet, a habitational name from a place in Indre so named, from Gallic dunum ‘hill’, later ‘fortress’, ‘stronghold’.

Source: Dictionary of American Family Names ©2013, Oxford University Press