In Croatia, Trešin families are Croats (from the Island of Ugljan ). In the past century, relatively most of Croatian residents bearing this family name were born in Zadar and on the Island of Ugljan.
Prevalence
About 20 people with faimily name Trešin live in Croatia today, in 9 households. There were 20 of them in the middle of the past century, and their number remains constant. They are located in two Croatian counties, in one city and two other places, mostly in Kali on the Island of Ugljan (20), Zadar (<10), and in Vela Luka on the Island of Korcula (<5).
