In Croatia, Šur families are Croats (from the Island of Brac ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Sibenik.
Prevalence
About 10 people with faimily name Šur live in Croatia today, in four households only. There were 20 of them in the middle of the past century, and their number halved. They are located in four Croatian cities only: in Velika Gorica (<10), Supetar on the Island of Brac (<5), Split (<5), and in Zadar (<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.