In Croatia, Kach families are Croats (from Slavonski Brod ).
Prevalence
Only a few people with faimily name Kach live in Croatia today, in one household only. They are located in one Croatian city only, in Slavonski Brod (<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.