Marlais families are Croats and they are mostly from Boljenovici on Peljesac Penninsula. In the past century, relatively most of Croatian residents bearing this family name were born in Dubrovnik and on Peljesac Peninsula. In Boljenovići on Peljesac Peninsula every fifth inhabitant had the family name Marlais.
Prevalence
About 70 people with faimily name Marlais live in Croatia today, in 30 households. There were 0 of them in the middle of the past century, and their number multiplied. They are located in four Croatian counties, four cities and 9 other places, mostly in Boljenovici on the Peljesac peninsula (20), Dubrovnik (15), Mokosica (10), and in Ston (<10) and Metohija (<10) on the Peljesac peninsula.
Outside Croatia
Family name Marlais is present in 7 countries on three continents. The family name "Marlais " is used by small number of people in the United States , small number in Australia , and small number in Great Britain.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1926 in source Emigration Commission Zagreb.