Šešo families are Croats and they are mostly from Knin area. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and in Knin area. In Lukar in Knin area every ninth inhabitant had the family name Šešo.
Prevalence
About 80 people with faimily name Šešo live in Croatia today, in 30 households. There were 150 of them in the middle of the past century, and their number halved. They are located in 8 Croatian counties, in 10 cities and another small place , mostly in Zagreb (50), Knin (10), Drnis (<10), Zadar (<10), and in Lukar in Knin area (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 2007 in source Encyclopaedia of Croatian Surnames.