In Croatia, Rustija families are Croats (from Gospic ). In the past century, relatively most of Croatian residents bearing this family name were born in Middle Bosnia (Sarajevo area).
Prevalence
Only a few people with faimily name Rustija live in Croatia today, in one household only. They are located in only one small Croatian place, in Bilaj (<5).
Outside Croatia
Family name Rustija (including: Rustiyah , Rustiya and Rustijah ) is present in three countries on two continents.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1930 in source Emigration Commission Zagreb.