In Croatia, Cum 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
Only a few people with faimily name Cum 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 Veli Losinj on the Island of Losinj (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.