Jambrek families are Croats and they are mostly from Lepoglava area. According to some sources they are from Bedekovcina area. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and in Lepoglava area. In Vojnić-Breg in Lepoglava area every eighth inhabitant had the family name Jambrek.
Prevalence
About 420 people with faimily name Jambrek live in Croatia today, in 180 households. There were 590 of them in the middle of the past century, and their number decreased by 30 percent. They are located in the most of Croatian counties, in 29 cities and 60 other places, mostly in Zagreb (110), Gornji Stupnik in Samobor area (20), Sisak (15), Varazdin (15), and in Kutjevo in Orahovica area (10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.