In Croatia, Rais families are mainly Czechs (from Daruvar ), equally Croats (also from Daruvar ). In the past century, relatively most of Croatian residents bearing this family name were born in Daruvar and Pakrac.
Prevalence
About 10 people with faimily name Rais live in Croatia today, in four households only. There were 0 of them in the middle of the past century, and their number multiplied. They are located in one Croatian city only, in Daruvar (10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1942 in source Phone Directory of the Independent State of Croatia 1942.