In Croatia, Giljan families are generally Croats (from Danilovgrad, Montenegro ), very rarely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Vrlika and Djakovo.
Prevalence
About 20 people with faimily name Giljan live in Croatia today, in 10 households. There were 20 of them in the middle of the past century, and their number remains constant. They are located in five Croatian cities only: in Maovice (10), Solin (<10), Rijeka (<5), Kastel Sucurac (<5), and in Senj (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1917 in source List of Dignitaries, Officials and Public Servants of the Kingdom of Croatia-Slavonia.