Šešelj families are Croats and they are mostly from Opuzen area. According to some sources they are from Popova polja. In the past century, relatively most of Croatian residents bearing this family name were born in Metkovic and in Opuzen area. In Podgradina in Opuzen area every eighth inhabitant had the family name Šešelj.
Prevalence
About 110 people with faimily name Šešelj live in Croatia today, in 40 households. There were 70 of them in the middle of the past century, and their number increased by 50 percent. They are located in 6 Croatian counties, in 9 cities and 6 other places, mostly in Opuzen (45), Zagreb (15), Podgradina in Opuzen area (15), Metkovic (10), and in Buk-Vlaka (<10).
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.