In Croatia, Semper families are almost entirely Croats (from Zlatar area ), barely Italians (from Split ). In the past century, relatively most of Croatian residents bearing this family name were born in Zlatar area and in Zagreb.
Prevalence
About 60 people with faimily name Semper live in Croatia today, in 19 households. There were 80 of them in the middle of the past century, and their number decreased by 30 percent. They are located in four Croatian counties, four cities and 7 other places, mostly in Susobreg in Zlatar area (15), Zagreb (<10), Globocec in Zlatar area (<5), Vidovec Krapinski (<5), and in Otrckovec in Sveti Ivan Zelina area (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1701 in source Catholic Church Parish Records.