In Croatia, Grzelja families are Croats (from Zlatar ). In the past century, relatively most of Croatian residents bearing this family name were born in Zlatar and Zagreb.
Prevalence
About 50 people with faimily name Grzelja live in Croatia today, in 20 households. There were 50 of them in the middle of the past century, and their number remains constant. They are located in 7 Croatian counties and 9 other places, mostly in Martinscina (15), Zagreb (15), Bjelovar (<10), Jarmina in Vinkovci area (<10), and in Turnisce in Zlatar area (<10).