In Croatia, Gelli families are Croats (from Zagreb ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb.
Prevalence
Only a few people with faimily name Gelli live in Croatia today, in four households only. They are located in two Croatian cities only, in Zagreb (<10) and Galovic Selo (<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.