In Croatia, Morvaj families are Croats (from Djakovo area ). In the past century, relatively most of Croatian residents bearing this family name were born in Slavonski Brod area and in Pozega.
Prevalence
About 50 people with faimily name Morvaj live in Croatia today, in 19 households. There were 40 of them in the middle of the past century, and their number increased by 40 percent. They are located in 6 Croatian counties, in 6 cities and four other places, mostly in Pozega (20), Slavonski Brod (10), Velika Kopanica in Djakovo area (<10), Zagreb (<10), and in Petrinja (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.