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Cognomen Leifur (Leifur , Лейф ) , worldwide, is a very rare surname. The cognomen Leifur is habitual in the United States, where it is a very rare surname, Canada, where it is an extremely rare surname, and Russia. More frequently, Leifur is the forename as well as the last name.
Sson, Björnsson, Guðjónsson, Gislason, Ellertsson, Elíasson, Erlendsson, Einarsson, Eiríksson, Orvaldsson, ºsson, Ólafsson, Þorvaldsson, Þorsteinsson, Magnusson, Guðmundsson, Grétarsson, Hafsteinsson, Sigurdsson, Kristjansson, Gunnarsson, Thordarson, Bjornsson, Bárðarson, Breidfjord, Auðunsson, Thor, Ingi, Örn, Arson, Ksson, Rnsson, Eirksson, Hilbig, Petursson, Grímsson, Kristjánsson, Leifsson, Jónsson, Tarsson, Elísson, Eiriksson, Helgason, Orbergsson, Welding, Ulbrich, Árnason, Magnússon, Jonsson, and Gudmundsson