In Croatia, Dunai families are Croats (from Osijek area ). In the past century, relatively most of Croatian residents bearing this family name were born in Osijek.
Prevalence
About 10 people with faimily name Dunai live in Croatia today, in 6 households. There were 10 of them in the middle of the past century, and their number remains constant. They are only located in two Croatian cities and four other places, mostly in Cepin in Osijek area (<10), Osijek (<5), Josipovac (<5), Beli Manastir (<5), and in Tenja (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.