In Croatia, Lefler families are predominantly Croats (from Virovitica ), rarely Czechs (from Grubisno Polje ), and very rarely Hungarians (from Backa, Vojvodina ). In the past century, relatively most of Croatian residents bearing this family name were born in Grubisno Polje and Virovitica.
Prevalence
About 30 people with faimily name Lefler live in Croatia today, in 18 households. There were 60 of them in the middle of the past century, and their number halved. They are located in 8 Croatian counties, in 7 cities and 10 other places, mostly in Rijeka (<10), Ivanovo Selo (<10), Podrvanj in Rijeka area (<5), Virovitica (<5), and in Rezovac (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.