Surname Diemar (Diemar 
) , throughout the world, is a rare cognomen. The family name Diemar is habitual in Denmark, where it is a rare surname, Germany, and Australia. In absolute terms, it is the most numerous in Germany, Australia, and the United States. Much less frequently, Diemar is the forename as well as the last name.
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| Diemar | Germany, Indonesia, Australia, United States, Denmark |
| maria ursula von diemar (b. 1631) |
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| adolph ernst von diemar (b. 1676) |
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| ernst hartmann von diemar DE (b. 1682) |
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| emanuel matthias diemar DE (b. 1720) |
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| benjamin diemar DE (b. 1741) |
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| sophie von diemar CH (b. 1801) |
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| adamine von diemar (b. 1848) |
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| hermann diemar (b. 1865) |
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| diemar moering DE (b. 1902) |
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| thekla diemar (b. 1910) |
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| mogens diemar SE (b. 1926) |
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| frank diemar German heraldist, DE (b. 1963) |
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| frank diemar German graphic designer, DE (b. 1963) |
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| sarah s diemar researcher ORCID ID = 0000-0003-4681-589X |
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| johann adam von diemar officer |
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