Family name Þorleifsdóttir (Þorleifsdóttir 
) , all over the world, is a very rare last name. The cognomen Þorleifsdóttir is characteristic of Northern Europe, particularly Iceland, where it is quite a common surname.
| VARIANT | COUNTRY |
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| Þorleifsdóttir | Iceland |
| guðbjörg þorleifsdóttir (b. 1870) |
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| guðríður þorleifsdóttir IS (b. 1879) |
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| ósk þorleifsdóttir IS (b. 1884) |
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| guðríður þorleifsdóttir IS (b. 1886) |
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| valgerður þorleifsdóttir IS (b. 1901) |
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| ólöf þorleifsdóttir IS (b. 1903) |
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| hólmfríður þorleifsdóttir IS (b. 1904) |
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| þórhildur þorleifsdóttir Icelandic actor-politician, IS (b. 1945) |
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| rosmarie brynhildur þorleifsdóttir IS (b. 1941) |
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| solveig þorleifsdóttir |
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| björg þorleifsdóttir IS |
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| svafa þorleifsdóttir IS |
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