Around the globe, Sierd (Sierd 
) is a very rare masculine first name. The given name Sierd is habitual in Western Europe, particularly Netherlands, where it is a rare boy's name. Very seldom, Sierd is the last name as well as the forename.
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| Sierd | Canada, Hungary, United States, Netherlands, South Africa |
| sierd tjebbes politician (b. 1550) |
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| sierd kammenga Dutch painter, NL (b. 1835) |
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| sierd geertsma Dutch painter (1896-1985), NL (b. 1896) |
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sierd cloetingh Dutch geophysicist, NL (b. 1950) |
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| sierd de vos Nederlands sportverslaggever, NL (b. 1959) |
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| sierd van der berg Dutch association football player, NL (b. 1968) |
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| sierd schaafsma university teacher at Leiden University |
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| sierd de vries researcher ORCID ID = 0000-0001-5865-3715 |
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| sierd cloetingh researcher |
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De, Visser, Waldus, Boersma, Koopsma, Roosjen, Dijkman, Jongsma, Hortsing, Vegelin, Weidema, Woudstra, Zijlstra, Dijkstra, Lamminga, Hornstra, Hoekstra, Visserman, Cloetingh, Broertjes, Zuiderveld, Kloosterman, Hadley, Eekkerk, Tappel, Jansen, Bij, Pas, Hus, Moll, Stel, Smit, Boer, Bron, Bosma, Loman, Van Der Bij, Tilma, Eriks, Heida, Vries, Opzichter, Zijnstra, Meijer, Randen, Roosje, Dedden, Gjaltema, Nutma, and Westerfield