Across the world, Iorwerth (Iorwerth 
) is a rare male first name. The given name Iorwerth is characteristic of Northern Europe, particularly the United Kingdom, where it is a rare boy's name. Very seldom, Iorwerth is the last name as well as the forename.
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| Iorwerth | Canada, United States, United Kingdom |
Duarte, Ed, Eddy, Edoardo, Edouard, Eduard, Eduardas, Eduardo, Eduardos, Eduards, Eduardus, Eduart, Edvard, Edvárd, Edward, Eetu, Eide, Odoardo, Yarwood, Édouard, Дуарте, Ед, Едвард, Едвардас, Едварт, Еди, Едоардо, Едуар, Едуард, Едуардас, Едуардо, Едуардус, Ету, Эд, Эдвард, Эдди, Эдоардо, Эдуар, Эдуард, Эдуарда, Эдуардас, Эдуардо, Эдуардс, Эдуарду, Эдуарт, Эйде, אד, אדוארד, דוארטה, إد,
| iorwerth ap bleddyn Welsh prince of Powys (b. 1053) |
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iorwerth drwyndwn King of Gwynedd (b. 1145) |
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| iorwerth ap owain Welsh prince of Gwynllwg and Lord of Carleon (b. 1200) |
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| iorwerth goch ap maredudd 1200-1171 (b. 1200) |
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| iorwerth beli British poet (b. 1250) |
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| iorwerth fychan Welsh poet, GB (b. 1250) |
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| iorwerth ab y cyriog Welsh poet, GB (b. 1400) |
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| iorwerth fynglwyd Welsh poet (b. 1450) |
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iorwerth thomas British politician (1895-1966), GB (b. 1895) |
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| iorwerth cyfeiliog peate Welsh writer; founder of the Welsh Folk Museum (1901-1982), GB (b. 1901) |
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| iorwerth jones Welsh rugby union and rugby league footballer, GB (b. 1903) |
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| iorwerth evans Welsh rugby union player, GB (b. 1906) |
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| iorwerth hughes British association football player (1925-1993), GB (b. 1925) |
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| iorwerth ap maredudd Peerage person ID=432194 |
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| iorwerth ap madog ap gruffudd (est. 1225 - ) |
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