In Croatia, Manzo families are Italians (from Umag ). 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 Manzo live in Croatia today, in one household only. They are located in one Croatian city only, in Umag (<5).
Outside Croatia
Family name Manzo (including: Maanzo , Manzzo and Manzho ) is present in 68 countries worldwide. "Manzzo " is used by some 90 people in Panama , about 60 in Brazil , and small number of people in the United States.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1917 in source List of Dignitaries, Officials and Public Servants of the Kingdom of Croatia-Slavonia.