42 mentions are found for request
different sources from the year —1924 (9) 1926—1931 (10) 1933—1942 (8) 2007 (15)

Slavko Crnjak

Source: 'Encyclopaedia of Croatian Surnames , year 2007.

Đuro Črnjak

Source: 'Encyclopaedia of Croatian Surnames , year 2007.