In Croatia, Rosler families are Croats (from Zagreb ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Koprivnica.
Prevalence
About 10 people with faimily name Rosler live in Croatia today, in two households only. They are located in two Croatian cities only, in Zagreb (<10) and Krizevci (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1917 in source List of Dignitaries, Officials and Public Servants of the Kingdom of Croatia-Slavonia.