Last name Dacia (Dacia 
, Dacian 
, Дация 
) , all around the world, is quite a rare surname. The last name Dacia is habitual in Romania, where it is quite a rare surname, Honduras, and Moldova. Measured by absolute frequency, it is commonest in Mexico, Romania, and Philippines. More prevalently, Dacia is the forename as well as the last name.
| martin of dacia 13th-century Danish scholar (b. 1220) |
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| petrus de dacia Swedish monk, SE (b. 1235) |
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| petrus philomena de dacia Danish mathematician and astronomer (b. 1300) |
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| nicolaus de dacia 14th-century Danish logician (b. 1340) |
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