In Croatia, Simonovich families are Croats by relative majority, equally Italians (from Rijeka ). In the past century, relatively most of Croatian residents bearing this family name were born in Rijeka.
Prevalence
Only a few people with faimily name Simonovich live in Croatia today, in one household only. There were 10 of them in the middle of the past century, and their number decreased significantly. They are located in one Croatian city only, in Rijeka (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over twenty times, the first time 1750 in source 18th Century Census.