In Croatia, Ther families are Croats (from Beli Manastir ). In the past century, relatively most of Croatian residents bearing this family name were born in Vukovar.
Prevalence
Only a few people with faimily name Ther live in Croatia today, in three 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 Zagreb (<5) and Beli Manastir (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1927 in source Emigration Commission Zagreb.