In Croatia, Marenzi families are Croats (from Sibenik ). In the past century, relatively most of Croatian residents bearing this family name were born in Sibenik and Karlovac.
Prevalence
About 10 people with faimily name Marenzi live in Croatia today, in five households only. There were 10 of them in the middle of the past century, and their number remains constant. They are located in two Croatian cities only, in Sibenik (10) and Skradin (<5).
Outside Croatia
Family name Marenzi is present in 18 countries worldwide.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.