In Croatia, Bert families are Croats (from Ozalj area ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Karlovac.
Prevalence
Only a few people with faimily name Bert live in Croatia today, in three households only. There were 20 of them in the middle of the past century, and their number halved. They are located in two Croatian counties, in one city and another small place , mostly in Ribnik in Ozalj area (<10) and Makarska (<5).
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.