In Croatia, Kollanyi families are Croats (from Nin area ).
Prevalence
Only a few people with faimily name Kollanyi live in Croatia today, in one household only. They are located in only one small Croatian place, in Vir in Nin area (<5).
Outside Croatia
Family name Kollanyi is present in 8 countries on four continents.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over fifty times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.