In Croatia, Gulielmi families are Croats (from the Island of Hvar ). In the past century, relatively most of Croatian residents bearing this family name were born on the Island of Hvar and in Split.
Prevalence
Only a few people with faimily name Gulielmi live in Croatia today, in three households only. They are located in three Croatian cities only: in Stari Grad (<5) and Hvar (<5) on the Island of Hvar, and in Samobor (<5).
Outside Croatia
Family name Gulielmi is present in five countries on three continents. The family name "Gulielmi " is used by small number of people in Italy and small number of people in the United States.
