Iorwerth
Iorwerth ({{IPA|cy|ˈjɔrwɛrθ}}) is a Welsh name, composed of two elements: {{lang|cy|iôr}} meaning 'lord' and {{lang|cy|berth}} meaning 'fair', 'fine', or 'handsome'.{{cite web
| last = Campbell | first = Mike | title = Iorwerth | work = Behind the Name: the etymology and history of first names | url = http://www.behindthename.com/name/iorwerth | access-date = 2 September 2012}} (Both morphemes are somewhat archaic in Modern Welsh.) The name has historically been associated with the name Edward, although the names do not have a common origin and neither name is a translation of the other.
Bearers of the name include:
- Iorwerth Beli (fl. second half of the 14th century), Welsh language poet
- Iorwerth ap Bleddyn (1053–1111), prince of Powys in eastern Wales
- Iorwerth Drwyndwn (1145–1174), son of Owain Gwynedd, king of Gwynedd
- Iorwerth (bishop of St David's) (fl. 1215)
- Thomas Iorwerth Ellis OBE (1899–1970), Welsh classicist and author
- Iorwerth Evans (1906–1985), rugby union footballer of the 1930s
- Iorwerth Hirflawdd, ancestor of various medieval rulers in mid Wales
- Iorwerth Isaac (1911–1966), Welsh dual-code international rugby flanker
- Iorwerth Jones (1903–1983), Welsh rugby union and professional rugby league footballer
- Iorwerth Peate (1901–1982), Welsh poet and scholar
- Iorwerth Thomas (1895–1966), Welsh Labour Party politician
- Llywelyn ap Iorwerth (1172–1240), Llywelyn the Great, de facto ruler over most of Wales
- Rhun ap Iorwerth, Plaid Cymru Member of the Senedd for {{lang|cy|Ynys Môn|italic=no}}