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Last name Helgi (Oleg , Helge , Helgi ) , across the world, is a common cognomen. The cognomen Helgi is habitual in Moldova, where it is quite a common surname, Israel, and Georgia (explore the name in all countries). More frequently, Helgi is the forename as well as the last name.
Sson, Eiríksson, Hróðmarsson, Oskarsson, ºsson, Ólafsson, Þorsteinsson, Magnusson, Sigurðsson, Guðmundsson, Jóhannesson, Halldórsson, Hermannsson, Hilmarsson, Sigurdsson, Björgvinsson, Kristinsson, Gunnarsson, Gunnlaugsson, Johannsson, Haraldsson, Kristjánsson, Einarsson, Jóhannsson, Guðjónsson, Karlsson, Ksson, Rnsson, Freyr, Mundsson, Hansen, Yngvason, Pálsson, Jonsson, Joensen, Jónsson, Gudmundsson, Eiriksson, Hauksson, Helgason, Héðinsson, Varsson, Magnússon, Sævarsson, Agustsson, Baldursson, Björnsson, Bjarnason, Harðarson, and Thorsteinsson