In Croatia, Kernjak families are Croats (from Cakovec area ). In the past century, relatively most of Croatian residents bearing this family name were born in Cakovec and in Cakovec area.
Prevalence
About 20 people with faimily name Kernjak live in Croatia today, in 9 households. There were 20 of them in the middle of the past century, and their number remains constant. They are located in threee Croatian counties, two cities and 5 other places, mostly in Vugrisinec (<10) and Vukanovec (<10) in Cakovec area, Ilok (<5), Nedelisce in Cakovec area (<5), and in Semovec in Varazdin area (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.