In Croatia, Guerieri families are Croats (from the Island of Brac ). In the past century, relatively most of Croatian residents bearing this family name were born on the Island of Brac and in Split.
Prevalence
About 20 people with faimily name Guerieri live in Croatia today, in 9 households. They are located in only five naselja i to in Skrip (20), Supetar (<10) and Pucisca (<5) on the Island of Brac, Split (<5), and in Mirca on the Island of Brac (<5).