In Croatia, Kertić families are Bosniaks (from Zapresic ). In the past century, relatively most of Croatian residents bearing this family name were born in Osijek and in Bosnian Krajina (Teslic area).
Prevalence
About 10 people with faimily name Kertić live in Croatia today, in three households only. They are located in only four naselja i to in Kupljenovo (<10), Zagreb (<5), Osijek (<5), and in Nova Kapela in Vrbovec area (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.