Ieuan Gwyllt was the bardic name of Welsh musician and minister John Roberts (22 December 1822 - 14 May 1877).
His bardic name is derived from the nom de plume he used whilst writing poetry as a boy, Ieuan Gwyllt Gelltydd Melindwr (John of the Wild Woods near the Mill Tower).
He was born at Tanrhiwfelen, a house just outside Aberystwyth, and died in Caernarfon on 14 May 1877.
He was buried at Caeathro cemetery near Caernarfon.