The origin of the distinguished surname Bosso may be located in the ancient and beautiful city of Venice.
Although people were originally known only by their first names, it became necessary to adopt a second name to identify due to population growth.

The most common type of family name found in the region of Venice was the surname that derives from the name of the father.
During the Middle Ages the Italians adopted the patronymic system for surnames.
Then in Italy during the Christian era, people often gave as a second name to their children the names of saints or biblical figures.
The nicknames as surnames usually reflected the physical characteristics of the first member of the lineage.
Although the most common type of name in the Veneto region of origin was the surname which was derived from the name of the father
local surnames are also found. The local names describe a region or place where they lived the first members of the lineage. Other local Italian last name had the prefix "Di" denoting the migration from one place to another.
Bosso's family lived in the city of Milan.