In Croatia, Đeldum families are Croats (from the Island of Krk ). In the past century, relatively most of Croatian residents bearing this family name were born in Split and Trogir.
Prevalence
About 40 people with faimily name Đeldum live in Croatia today, in 20 households. There were 20 of them in the middle of the past century, and their number doubled. They are located in 6 Croatian counties, in 9 cities and 5 other places, mostly in Split (<10), Orebic on the Peljesac peninsula (<10), Zagreb (<5), Trogir (<5), and in Malinska on the Island of Krk (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 2007 in source Encyclopaedia of Croatian Surnames.