In Croatia, Kummer families are generally Croats (from Dubrovnik ), rarely Slovenes (from Kotor, Montenegro ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and in Kotor, Montenegro.
Prevalence
About 10 people with faimily name Kummer live in Croatia today, in five households only. They are located in only five naselja i to in Zagreb (<10), Dubrovnik (<5), Nova Mokosica (<5), Rokovci in Vinkovci area (<5), and in Mokosica (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1917 in source List of Dignitaries, Officials and Public Servants of the Kingdom of Croatia-Slavonia.