In Croatia, Sekeli families are generally Croats (from Bosnian Krajina ), rarely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Bosnian Krajina (Teslic area) and in Slavonski Brod.
Prevalence
About 10 people with faimily name Sekeli live in Croatia today, in four households only. There were 0 of them in the middle of the past century, and their number multiplied. They are located in two Croatian cities only, in Zagreb (<10) and Velika Gorica (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.