In Croatia, Reiner families are Croats (from Pregrada ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and in Ivanec area.
Prevalence
About 20 people with faimily name Reiner live in Croatia today, in 12 households. There were 50 of them in the middle of the past century, and their number decreased significantly. They are located in five Croatian cities only: in Zagreb (15), Pregrada (<5), Osijek (<5), Varazdin (<5), and in Samobor (<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.