In Croatia, Šir families are Croats (from Velika Gorica ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb.
Prevalence
About 20 people with faimily name Šir live in Croatia today, in 7 households. There were 10 of them in the middle of the past century, and their number doubled. They are located in three Croatian cities only: in Zagreb (10), Velika Gorica (<10), and in Pula (<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.