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Family name Sigurdur (Sigurdur , Sigurđur) , in the world, is a very rare last name. The cognomen Sigurdur is habitual in Iceland, where it is quite a rare surname, Canada, where it is a very rare surname, and Spain. More prevalently, Sigurdur is the forename as well as the last name.
Witt, Olafsson, Ólafsson, Magnusson, Sigfusson, Stefansson, Kjartansson, Halldorsson, Ingvarsson, Saemundsson, Sigurdsson, Sigurdarson, Bjorgvinsson, Kristinsson, Kristjansson, Ragnarsson, Gunnarsson, Gunnlaugsson, Gudbrandsson, Johannsson, Haraldsson, Gudmundsson, Hannesson, Hardarson, Einarsson, Tomasson, Olason, Omarsson, Skulason, Arnason, Palsson, Petursson, Jonsson, Jónsson, Eiriksson, Hauksson, Johannesson, Helgason, Svavarsson, Asgeirsson, Bjornsson, Bjarnason, Karlsson, Palmason, Gardarsson, Gunaarsson, Gudjonsson, Gislason, Sverrisson, and Thorsteinsson