In Croatia, Gerstman families are Croats (from Pozega area ). In the past century, relatively most of Croatian residents bearing this family name were born in Pozega area and in Pozega.
Prevalence
About 10 people with faimily name Gerstman live in Croatia today, in 6 households. There were 20 of them in the middle of the past century, and their number halved. They are located in only threee Croatian places: in Rajsavac in Pozega area (<10), Pozega (<10), and in Radnovac in Pozega area (<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.