In Croatia, Galjen families are Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Glina.
Prevalence
About 10 people with faimily name Galjen live in Croatia today, in five households only. There were 40 of them in the middle of the past century, and their number decreased significantly. They are located in only four naselja i to in Dragotina (<10), Petrinja (<5), Karlovac (<5), and in Donja Cemernica in Glina area (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.