In Croatia, Gudelj-Velaga families are Croats (from Imotski area ). In the past century, relatively most of Croatian residents bearing this family name were born in Imotski area and in Imotsko.
Prevalence
About 50 people with faimily name Gudelj-Velaga live in Croatia today, in 19 households. There were 70 of them in the middle of the past century, and their number decreased by 30 percent. They are located in four Croatian counties and four other places, mostly in Krivodol in Imotski area (15), Glavina Donja (15), Zagreb (<10), Split (<10), and in Dubrovnik (<10).
Outside Croatia
Family name Gudelj-Velaga is present in this form only in Croatia.
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.