Iorwerth ([ˈjɔrwɛrθ]) is a Welsh name, composed of two elements: iôr meaning "lord" and berth meaning "fair" or "handsome". (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 poetIorwerth ap Bleddyn (1053–1111), prince of Powys in eastern WalesIorwerth Drwyndwn (1145–1174), son of Owain Gwynedd, king of GwyneddIorwerth (bishop of St David's) (fl. 1215)Thomas Iorwerth Ellis OBE (1899–1970), Welsh classicist and authorIorwerth Evans (1906–1985), rugby union footballer of the 1930sIorwerth Hirflawdd, ancestor of various medieval rulers in mid WalesLlewelyn ab Iorwerth (1172–1240), Llywelyn the Great, de facto ruler over most of WalesIorwerth Isaac (1911–1966), Welsh dual-code international rugby flankerIorwerth Jones (1903–1983), Welsh rugby union and professional rugby league footballerIorwerth Peate (1901–1982), Welsh poet and scholarIorwerth Thomas (1895–1966), Welsh Labour Party politician