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Globally, Þorvarðarson (Þorvarðarson ) is an extremely rare unknown gender first name. Predominantly, Þorvarðarson is the last name as well as the forename.
Einar, Árni, Gunnar, Guðjón, Jóhann, Hjalti, Höskuldur, Þórir, Sigurður, and Guðmundur