Janus families are mainly Serbs and they are mostly from Glina , whereas often Croats (from Ogulin area ). In the past century, relatively most of Croatian residents bearing this family name were born in Glina and in Ogulin area. In Brubno in Glina every fourth inhabitant had the family name Janus.
Prevalence
About 120 people with faimily name Janus live in Croatia today, in 60 households. There were 210 of them in the middle of the past century, and their number decreased by 40 percent. They are located in the most of Croatian counties, in 18 cities and 15 other places, mostly in Zagreb (20), Keici in Ogulin area (15), Tenja (<10), Borovo in Vukovar area (<10), and in Virovitica (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.