Cognomen Dacus (Дак 
, Dacus 
, داكوس) , globally, is quite a rare last name. The family name Dacus is habitual in the United States, where it is a rare surname, Belarus, and Ukraine. In absolute terms, it most frequently occurs in the United States, Ukraine, and Philippines. Very seldom, Dacus is the forename as well as the last name.
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| Дак | Kazakhstan, Belarus, Ukraine, Kyrgyzstan, Russia |
| Dacus | China, United States, Nigeria, Canada, Philippines |
| simon dacus (b. 1255) |
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| maria catharina dacus 29 Feb 1756 Thorn - 24 Sep 1811 Amsterdam (b. 1756) |
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| joseph a. dacus American writer and journalist (b. 1838) |
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| pence dacus American football player and coach, US (b. 1931) |
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lucy dacus American singer-songwriter, US (b. 1995) |
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| don dacus American musician, US (b. 1951) |
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| kaye dacus American writer (b. 1971) |
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| petrus dacus Finnish priest, FI |
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| jagadisa-devasri dacus researcher (ORCID 0000-0002-3824-8058) |
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| chad dacus Ph.D. Rice University 2008 |
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| angelo dacus researcher |
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| christianus dacus |
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| dacus simon |
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