Knežić families are mainly Croats and they are mostly from Zapresic area. According to some sources they are from Ši benika, often Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Sibenik and Sisak. In Gradina in Sibenik every fourth inhabitant had the family name Knežić.
Prevalence
About 590 people with faimily name Knežić live in Croatia today, in 250 households. There were 690 of them in the middle of the past century, and their number decreased by 10 percent. They are located in the most of Croatian counties, in 36 cities and 48 other places, mostly in Sibenik (65), Zagreb (45), Hrastovica (35), Metkovic (35), and in Mihalj in Opuzen area (35).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over forty times, the first time 1691 in source Catholic Church Parish Records.