In Croatia, Berni families are generally Croats (from Umag ), rarely Italians (from Slovenia ). In the past century, relatively most of Croatian residents bearing this family name were born in Porec and Umag.
Prevalence
About 10 people with faimily name Berni live in Croatia today, in five households only. There were 0 of them in the middle of the past century, and their number multiplied. They are located in only four naselja i to in Umag (<5), Zadar (<5), Crno (<5), and in Savudrija (<5).
Outside Croatia
At least three families with this surname emigrated from Croatia to the United States. Family name Berni (including: Berny , Bernie and Bernieh ) is present in 81 countries worldwide. "Bernie " is used by some 1000 people in the United States , about 400 in France , and some 300 people in Australia.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over thirty times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.