In Croatia, Grm families are predominantly Croats (from Delnice ), rarely Slovenes (from Slovenia ). In the past century, relatively most of Croatian residents bearing this family name were born in Slovenia.
Prevalence
Only a few people with faimily name Grm live in Croatia today, in two households only. There were 10 of them in the middle of the past century, and their number remains constant. They are located in only four naselja i to in Brod na Kupi (<10), Orahovica (<5), Dedin (<5), and in Zapolje Brodsko (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1925 in source Emigration Commission Zagreb.