In Croatia, Brentin families are Croats (from Opatija area ). In the past century, relatively most of Croatian residents bearing this family name were born in Rijeka and in Opatija area.
Prevalence
About 20 people with faimily name Brentin live in Croatia today, in 12 households. There were 60 of them in the middle of the past century, and their number decreased significantly. They are located in only five naselja i to in Veli Brgud in Opatija area (15), Rijeka (<10), Supetarska Draga on the Island of Rab (<5), Kosi in Rijeka area (<5), and in Jurdani in Opatija area (<5).