In Croatia, Marsanich families are Croats by relative majority (from Rijeka ), equally Italians (also 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 Marsanich live in Croatia today, in four households only. There were 50 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 Marsanich is present in 7 countries worldwide.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.