In Croatia, Franco families are Croats by relative majority, equally Slovenes (from Rijeka ).
Prevalence
About 30 people with faimily name Franco live in Croatia today, in two households only. There were 50 of them in the middle of the past century, and their number decreased by 50 percent. They are located in two Croatian cities only, in Rijeka (<5) and Pula (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over a hundred times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.