In Croatia, Rorbaher families are Croats (from Osijek area ). In the past century, relatively most of Croatian residents bearing this family name were born in Osijek area and in Bjelovar.
Prevalence
Only a few people with faimily name Rorbaher live in Croatia today, in four households only. There were 30 of them in the middle of the past century, and their number decreased significantly. They are located in three Croatian cities only: in Djakovo (<5), Kupinecki Kraljevec (<5), and in Bjelovar (<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.