In Croatia, Greser families are Croats (from Samobor ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb.
Prevalence
Only a few people with faimily name Greser live in Croatia today, in two households only. There were 0 of them in the middle of the past century, and their number multiplied. They are located in two Croatian cities only, in Samobor (<5) and Osijek (<5).