In Croatia, Bertonja families are generally Croats (from Rovinj ), rarely Bosniaks (from Pula ). In the past century, relatively most of Croatian residents bearing this family name were born in Pula and Zagreb.
Prevalence
About 10 people with faimily name Bertonja live in Croatia today, in four households only. There were 10 of them in the middle of the past century, and their number remains constant. They are located in three Croatian cities only: in Pula (<10), Rovinj (<10), and in Zagreb (<5).
Outside Croatia
Family name Bertonja is present in 12 countries worldwide.
