Grudenić families are Croats and they are mostly from Petrinja area. In the past century, relatively most of Croatian residents bearing this family name were born in Sisak and Rijeka. In Marinbrod in Glina every seventh inhabitant had the family name Grudenić.
Prevalence
About 110 people with faimily name Grudenić live in Croatia today, in 50 households. There were 130 of them in the middle of the past century, and their number decreased by 20 percent. They are located in 6 Croatian counties, in 10 cities and 16 other places, mostly in Rijeka (20), Zagreb (15), Letovanic in Petrinja area (15), Marinbrod (15), and in Bjelovar (<10).
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.