In Croatia, Šlender families are Croats (from the Island of Brac ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Split.
Prevalence
About 10 people with faimily name Šlender live in Croatia today, in five households only. There were 0 of them in the middle of the past century, and their number multiplied. They are located in three Croatian cities only: in Supetar on the Island of Brac (<10), Zagreb (<10), and in Split (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over twenty times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.