Cognomen Willem (Willem 
, 威廉 
, ويليم 
, along with others...) , around the world, is quite a common family name. The last name Willem is habitual in Namibia, where it is quite a common surname, Antigua and Barbuda, and Belgium. In absolute terms, the name is most common in Indonesia, Belgium, and France. More frequently, Willem is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Willem | South Africa, Indonesia, Netherlands, Belgium, Namibia |
| 威廉 | China |
| ويليم | Sudan, Iraq |
| Виллем | Russia |
| Вилем | Kazakhstan, Kyrgyzstan, Russia, Armenia |
| Вілем | Ukraine |
| וילם | Israel |
Bill, Ghilherme, Guglielmo, Guilherme, Guillaume, Guillem, Guillen, Guillermo, Guillén, Gulielmus, Gwilherm, Gwilym, Gwyllym, Pim, Vilem, Vilhelm, Vilhelmo, Viljem, Vilmos, Vilém, Wilhelm, Wilhelm Carl, Wiliam, Will, Willemijn, Willhelm, William, Willém, Wm., Μπιλ, Бил, Билл, Біл, Білл, Вил, Вилл, Вилль, Вилмос, Вилмош, Вилхелм, Вильгельм, Вильем, Вильмош, Вильям, Вилям, Віллем, Вільгельм, Вільмош, Вільям, Гийом, Гильен, Гильерме, Гильермо, Гійом, Гільєн, Гільєрмо, Уилл, Уильям, Уилям, Уільям, ביל, גוליאלמו, גיום, ווילהעלם, וויליאם, ווילם, וילהלם, ויליאם, بيل, ولیم, ويل, ويلهلم, ويليام, ویلیام, উইলিয়াম, বিল, ウィリアム, ウィル, ウイリアム, ギョーム, ギヨーム, ビッグ, ビル, 古林, 吉恩, 吉拉姆, 吉連, 威尔, 比尔, and 維倫
| van den mortre willem (b. 1265) |
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hans willem, baron van aylva 1 Apr 1722 Leeuwarden - 9 Jun 1751 's-Gravenhage, NL (b. 1722) |
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| hans willem, baron van aylva 28 Jul 1695 Ternaard - 15 Feb 1722 Leeuwarden, NL (b. 1695) |
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| rudolph willem, edler van pabst, vrijheer van wolfsweerd 30 Apr 1706 Kleef - 23 Jun 1782 Wageningen (b. 1706) |
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| christiaan willem, baron van den boetzelaer 24 Dec 1749 Leiden - 8 Apr 1815 's-Gravenhage (b. 1749) |
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| mr. godert willem, baron van dedem, heer van de berg 23 Apr 1791 Zwolle - 28 May 1866 H.den Berg, Dalfsen (b. 1791) |
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joseph willem BE (b. 1840) |
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| alexis willem Belgian politician, BE (b. 1839) |
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| victor willem Belgian zoologist, BE (b. 1866) |
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| james willem ID (b. 1873) |
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jean-pierre willem French humanitarian doctor, FR (b. 1938) |
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| jan willem German singer, entertainer and television presenter, DE (b. 1934) |
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| denyse willem Belgian painter and engraver, BE (b. 1943) |
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| michel willem mathematician, BE (b. 1953) |
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| clémence willem researcher |
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Bos, Barnard, Boshoff, Pienaar, Du Toit, Grobler, Janssen, Jordaan, Joubert, Erasmus, Viljoen, Olivier, Prinsloo, Pieterse, Steenkamp, Swanepoel, Pretorius, Potgieter, Du Plessis, Oosthuizen, Engelbrecht, Van Der Merwe, Coetzee, Strydom, Fourie, Venter, Nel, Van, Smit, Boer, Louw, Merwe, Meyer, Steyn, Smith, Swart, Janse Van Rensburg, Botha, Vries, Marais, Cloete, Basson, Bakker, Burger, Kruger, Jansen, Jacobs, Visser, Lubbe, and Van Der Westhuizen