In Croatia, Šešerin families are almost entirely Croats (from Glina ), barely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Glina and Zagreb.
Prevalence
About 50 people with faimily name Šešerin live in Croatia today, in 30 households. There were 50 of them in the middle of the past century, and their number remains constant. They are located in threee Croatian counties, four cities and 9 other places, mostly in Glina (25), Petrinja (<10), Graberje (<10), Zagreb (<5), and in Velika Buna (<5).
Outside Croatia
Family name Šešerin (including: Seserin , Shesherin ) is present in four countries.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1917 in source List of Dignitaries, Officials and Public Servants of the Kingdom of Croatia-Slavonia.