In Croatia, Tatar-Ruban families are Croats (from Jastrebarsko area ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Karlovac.
Prevalence
About 10 people with faimily name Tatar-Ruban live in Croatia today, in four households only. They are located in only four naselja i to in Donja Kupcina in Jastrebarsko area (<5), Zagreb (<5), Kupinec in Jastrebarsko area (<5), and in Brezovica (<5).
Outside Croatia
Family name Tatar-Ruban is present in this form only in Croatia.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 2007 in source Encyclopaedia of Croatian Surnames.