In Croatia, Sirak families are Croats (from Garesnica ). In the past century, relatively most of Croatian residents bearing this family name were born in Garesnica.
Prevalence
Only a few people with faimily name Sirak live in Croatia today, in five households only. There were 0 of them in the middle of the past century, and their number multiplied. They are located in only threee naselja i to in Garesnicki Brestovac (<5), Pula (<5), and in Garesnica (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1917 in source List of Dignitaries, Officials and Public Servants of the Kingdom of Croatia-Slavonia.