In Croatia, Mervcich families are predominantly Croats (from Opatija area ), rarely 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 Mervcich live in Croatia today, in four households only. There were 0 of them in the middle of the past century, and their number multiplied. They are located in only threee naselja i to in Rijeka (<5), Mihotici in Opatija area (<5), and in Pula (<5).
Outside Croatia
Family name Mervcich is present in two countries on two continents.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 2007 in source Encyclopaedia of Croatian Surnames.