In Croatia, Seiler families are Croats (from Valpovo area ). In the past century, relatively most of Croatian residents bearing this family name were born in Vukovar and in Valpovo area.
Prevalence
About 20 people with faimily name Seiler live in Croatia today, in 6 households. There were 10 of them in the middle of the past century, and their number doubled. They are located in only four Croatian places: in Vukovar (<10), Samatovci in Valpovo area (<10), Rijeka (<5), and in Rokovci in Vinkovci area (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1924 in source Emigration Commission Zagreb.