In Croatia, Fitz families are Croats (from Samobor area ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb.
Prevalence
About 20 people with faimily name Fitz live in Croatia today, in 7 households. There were 10 of them in the middle of the past century, and their number doubled. They are located in two Croatian counties, two cities and four other places, mostly in Zagreb (15), Prigorje Brdovecko in Zapresic area (<5), Sveta Nedelja in Samobor area (<5), Kucanec (<5), and in Strmec in Samobor area (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1927 in source Emigration Commission Zagreb.