In Croatia, Busanich families are Croats (from the Island of Losinj ). In the past century, relatively most of Croatian residents bearing this family name were born on the Island of Losinj.
Prevalence
About 20 people with faimily name Busanich live in Croatia today, in one household only. There were 0 of them in the middle of the past century, and their number multiplied. They are located in only one small Croatian place, in Susak on the Island of Losinj (<5).
Outside Croatia
Family name Busanich is present in 9 countries on four continents. The family name "Busanich " is used by small number of people in the United States. "Bussanich " is used by some 300 people in the United States , about 50 in Canada , and small number of people in Italy.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1664 in source Catholic Church Parish Records.