In Croatia, Tešvić families are Croats (from Peljesac Peninsula ). In the past century, relatively most of Croatian residents bearing this family name were born on Peljesac Peninsula and in Dubrovnik. In Donja Vrućica on Peljesac Peninsula every sixth inhabitant had the family name Tešvić.
Prevalence
About 10 people with faimily name Tešvić live in Croatia today, in five households only. They are located in only five naselja i to in Donja Vrucica (<10), Orebic (<5) and Trpanj (<5) on the Peljesac peninsula, Zagreb (<5), and in Dubrovnik (<5).
Outside Croatia
Family name Tešvić (including: Tesvic , Tesvich ) is present in four countries on three continents. "Tesvich " is used by some 60 people in the United States.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.