In Croatia, Ambrošić families are almost entirely Croats (from Virovitica ), barely Italians (from Porec ). In the past century, relatively most of Croatian residents bearing this family name were born in Virovitica and Zagreb.
Prevalence
About 60 people with faimily name Ambrošić live in Croatia today, in 20 households. There were 50 of them in the middle of the past century, and their number increased by 20 percent. They are located in the most of Croatian counties, in 11 cities and 7 other places, mostly in Virovitica (10), Varazdin (<10), Koprivnica (<10), Zagreb (<10), and in Split (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.