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Last name Thorhallsson (Thorhallsson
) , in the entire world, is a rare family name. The cognomen Thorhallsson is habitual in Northern Europe, particularly Iceland, where it is quite a common surname, Latvia, where it is a rare surname, and Norway. Not in comparison with a country's population, it is commonest in Northern Europe, particularly Iceland, Norway, and Denmark.
| VARIANT | COUNTRY |
|---|---|
| Thorhallsson | Norway, Iceland, Latvia, United States, Denmark |