Ieuan

Saint Ieuan, 6th-century Welsh saint of Llantrisant on the Isle of Anglesey.
Ieuan ab Owain Glyndŵr, illegitimate son to Owain Glyndŵr, the last native Prince of Wales.
Ieuan ap Hywel Swrdwal, Welsh poet – first recorded Welshman to write an English poem.
Ieuan Gethin ap Ieuan ap Lleision, Welsh poet
Ieuan Brydydd Hir, Welsh poet and singer from Meirionnydd
Ieuan Dyfi, Welsh poet
Ieuan Gwyllt, pen name of musician and minister John Roberts
Ieuan ap Iago, pen name of Evan James, poet who wrote the national anthem of Wales
Ieuan Williams, Welsh cricketer
Ieuan Rhys Williams, Welsh actor
Ieuan Wyn Pritchard Roberts, Baron Roberts of Conwy, Welsh Conservative politician.
Ieuan Wyn Jones, former Deputy First Minister for Wales, and leader of Plaid Cymru.