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Throughout the world, Rögnvaldur (Rögnvaldur ) is a very rare male first name. The given name Rögnvaldur is habitual in Northern Europe, particularly Iceland, where it is quite a rare masculine name.
Möller, Kristinsson, Halldórsson, Jóhannesson, Guðmundsson, Andrésson, Stefánsson, Úlfarsson, Ragnarsson, Ólafsson, Guðbrandsson, Björnsson, Helgason, Jónsson, Pálmason, Petursson, Skúlason, Ingólfsson, and Gudmundsson