Semenski families are Croats and they are mostly from Klanjec area. According to some sources they are from Poland. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and in Klanjec area.
Prevalence
About 60 people with faimily name Semenski live in Croatia today, in 30 households. There were 50 of them in the middle of the past century, and their number increased by 20 percent. They are located in 7 Croatian counties, in 7 cities and 13 other places, mostly in Zagreb (15), Sveti Kriz in Klanjec area (15), Bedekovcina in Lepoglava area (<10), Strucljevo in Zabok area (<10), and in Osijek (<10).
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.