Family name Deaconu (Deaconu 
) , throughout the world, is quite a common cognomen. The surname Deaconu is habitual in Romania, where it is quite a common surname, Italy, where it is a rare surname, and Greece. Measured by absolute frequency, it most frequently occurs in Romania, Italy, and Spain. Much less frequently, Deaconu is the forename as well as the last name.
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| Deaconu | Romania, Spain, Italy, Germany, United States |
| mihai deaconu Romanian politician, RO (b. 1960) |
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| alexandru deaconu Romanian football referee, RO (b. 1972) |
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| mihaela deaconu researcher (ORCID 0000-0003-4775-8401), RO |
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| madalina deaconu Ph.D. Université Henri Poincaré Nancy 1 1997 |
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| laurențiu cristian deaconu Ph.D. Institute of Mathematics of the Romanian Academy 2000, RO |
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| valentin deaconu mathematician, RO |
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| ana deaconu researcher (ORCID 0000-0003-4313-890X) |
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| daniel deaconu Ph.D. York University 2004 |
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| cosmin stefan deaconu researcher |
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| georgel-cristinel deaconu Romanian politician from Cuca, Argeș County, RO |
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| marian deaconu RO |
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| ronaldo deaconu association football player, RO (b. 1997) |
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Mr, Gili, Gigi, Nick, Nelu, Nyku, Emil, Vlad, Ilie, Ioan, Oana, Maria, Mario, Mirel, Mihai, Simon, Sorin, Stelu, Alina, Andra, Anton, Aneta, Geta, Adela, Gaby, Dany, Ms, Mia, Ana, Adi, Dan, Lia, Ion, Mada, Sebi, Alex, Alin, Anda, Anca, Cati, Bobo, Brad, Paul, Radu, Raul, Dani, Dana, Doru, and Adina