In Croatia, Kelšin families are Croats (from Ivanic-Grad ). In the past century, relatively most of Croatian residents bearing this family name were born in Ivanic-Grad and in Zagreb.
Prevalence
About 20 people with faimily name Kelšin live in Croatia today, in 9 households. There were 40 of them in the middle of the past century, and their number halved. They are located in threee Croatian counties, four cities and threee other places, mostly in Ivanic-Grad (<5), Dugo Selo (<5), Zagreb (<5), Posavski Bregi (<5), and in Klostar Ivanic in Ivanic-Grad area (<5).
Outside Croatia
Family name Kelšin (including: Kelsin , Kelshin and Khelsin ) is present in four countries.
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.