In Croatia, Gvardiol families are Croats (from Novigrad ). In the past century, relatively most of Croatian residents bearing this family name were born in Novigrad and Zadar.
Prevalence
About 30 people with faimily name Gvardiol live in Croatia today, in 10 households. There were 30 of them in the middle of the past century, and their number remains constant. They are located in only five naselja i to in Zadar (<10), Zagreb (<10), Novigrad (<10), Preko on the Island of Ugljan (<5), and in Zaglav on Dugi (Long) Island (<5).