In Croatia, Tvrdiša families are Croats (from Dubrovnik ). In the past century, relatively most of Croatian residents bearing this family name were born in Dubrovnik area.
Prevalence
Only a few people with faimily name Tvrdiša live in Croatia today, in one household only. There were 10 of them in the middle of the past century, and their number remains constant. They are located in only two naselja i to in Lopud (<5) and Dubrovnik (<5).
Outside Croatia
Family name Tvrdiša is present in this form only in Croatia.
