Last name Halldórsson (Halldórsson 
) , across the world, is a rare family name. The family name Halldórsson is habitual in Northern Europe, particularly Iceland, where it is a common surname, Denmark, where it is a rare surname, and Sweden.
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| Halldórsson | Denmark, Norway, Sweden, Iceland, United Kingdom |
| jón halldórsson Norwegian bishop, IS (b. 1275) |
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| jón halldórsson Icelandic historian, IS (b. 1665) |
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| þorleifur halldórsson Icelandic writer, IS (b. 1683) |
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| björn halldórsson (b. 1724) |
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ólafur þorsteinn halldórsson Icelandic lawyer (1855-1930), IS (b. 1855) |
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| jónmundur halldórsson (b. 1874) |
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haukur halldórsson Icelandic artist, IS (b. 1937) |
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| pétur halldórsson Icelandic politician, IS (b. 1887) |
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| jón halldórsson Icelandic sprinter, IS (b. 1889) |
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| gunnar halldórsson Icelandic association football player (1894-1962), IS (b. 1894) |
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| guðmundur halldórsson Icelandic association football player (1900-1986), IS (b. 1900) |
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| sigurður halldórsson Icelandic association football player (1910-1982), IS (b. 1910) |
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| halldór halldórsson Icelandic linguist, IS (b. 1911) |
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| ólafur halldórsson Icelandic association football player (1913-1992), IS (b. 1913) |
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| gísli halldórsson Icelandic architect, IS (b. 1914) |
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Ari, Unnar, Árni, Ægir, Ívar, Óskar, Ómar, Markús, Magnús, Sigmar, Skúli, Sölvi, Sævar, Sæmundur, Sveinn, Svanur, Svavar, Snorri, Arnór, Baldur, Birkir, Birgir, Oddur, Ottó, Hlynur, Helgi, Már, Jón, Örn, Ævar, Moses, Almar, Andri, Anton, Arnar, Bjorn, Björn, Kári, Daði, Dóri, Gylfi, Lárus, Torfi, Elias, Elvar, Einar, Egill, Halli, Páll, and Bjarni