In Croatia, Mahr families are Croats (from Split ). In the past century, relatively most of Croatian residents bearing this family name were born in Split and in Bosanian Posavina (Bosanska Gradiska area).
Prevalence
Only a few people with faimily name Mahr live in Croatia today, in two households only. There were 0 of them in the middle of the past century, and their number remains constant. They are located in one Croatian city only, in Split (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.