In Croatia, Clagna families are predominantly Croats (from Pazin area ), rarely Italians (from Pazin ).
Prevalence
Only a few people with faimily name Clagna live in Croatia today, in two households only. They are located in only two naselja i to in Brajkovici (<10) and Jakovici in Pazin area (<5).
Outside Croatia
Family name Clagna is present in two countries on two continents. The family name "Clagna " is used by few people in the United States.