In Croatia, Betti families are Croats (from Koprivnica ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Koprivnica.
Prevalence
About 20 people with faimily name Betti live in Croatia today, in 6 households. There were 10 of them in the middle of the past century, and their number doubled. They are located in only four naselja i to in Koprivnica (<10), Zagreb (<10), Split (<10), and in Draganovec (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1917 in source List of Dignitaries, Officials and Public Servants of the Kingdom of Croatia-Slavonia.