In Croatia, Mestrovich families are predominantly Italians (from Rijeka ), rarely Croats (also from Rijeka ). In the past century, relatively most of Croatian residents bearing this family name were born in Buje and Rijeka.
Prevalence
Only a few people with faimily name Mestrovich live in Croatia today, in three households 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 (<10).
Outside Croatia
Family name Mestrovich is present in 7 countries on four continents. The family name "Mestrovich " is used by some 200 people in the United States , about 90 in Argentina , and some 60 people in Italy.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over thirty times, the first time 1606 in source Catholic Church Parish Records.