In Croatia, Sebastijan families are Croats (from Nova Gradiska area ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and in Vinkovci area.
Prevalence
About 70 people with faimily name Sebastijan live in Croatia today, in 30 households. There were 60 of them in the middle of the past century, and their number increased by 20 percent. They are located in 9 Croatian counties, in 11 cities and 9 other places, mostly in Vinkovci (20), Pula (<10), Dubrovnik (<10), Velika Gorica (<10), and in Bestovje in Samobor area (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.