In Croatia, Grginac families are generally Croats (from Slatina area ), very rarely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Belisce and Osijek.
Prevalence
About 20 people with faimily name Grginac live in Croatia today, in 9 households. There were 30 of them in the middle of the past century, and their number decreased by 20 percent. They are located in threee Croatian counties, four cities and two other places, mostly in Cadjavica in Slatina area (10), Belisce (<10), Valpovo (<10), Karlovac (<5), and in Nasice (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.