In Croatia, Clai families are Croats by relative majority (from Rijeka ), equally Italians (from Umag ). In the past century, relatively most of Croatian residents bearing this family name were born in Rijeka.
Prevalence
About 10 people with faimily name Clai live in Croatia today, in five households only. There were 10 of them in the middle of the past century, and their number remains constant. They are located in only threee naselja i to in Rijeka (<5), Umag (<5), and in Vilanija (<5).
Outside Croatia
Family name Clai is present in 93 countries worldwide. The family name "Clai " is used by some 90 people in Italy , small number in the United States , and small number of people in Chile. "Clay " is used by some 50000 people in the United States , about 4000 in Great Britain , and some 2000 people in Australia.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1924 in source Emigration Commission Zagreb.