Surname Thorsteinsdóttir (Thorsteinsdóttir 
) , all over the world, is a very rare cognomen. The last name Thorsteinsdóttir is habitual in Northern Europe, particularly Iceland, where it is quite a rare surname.
| sólveig thorsteinsdóttir researcher |
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| hulda thorsteinsdóttir Icelandic athletics competitor, IS (b. 1991) |
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| margrét hulda thorsteinsdóttir Icelandic association football player, IS (b. 1999) |
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