In Croatia, Gera families are Croats (from Dubrovnik ). In the past century, relatively most of Croatian residents bearing this family name were born in Dubrovnik.
Prevalence
Only a few people with faimily name Gera live in Croatia today, in three households only. There were 20 of them in the middle of the past century, and their number halved. They are located in only one small Croatian place, in Gromaca (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1929 in source Emigration Commission Zagreb.