Ieuan ap Tudur Penllyn was a Welsh

Wales

Wales is a country that is part of the United Kingdom and the island of Great Britain, bordered by England to its east and the Atlantic Ocean and Irish Sea to its west. It has a population of three million, and a total area of 20,779 km²...

 poet of the late mediaeval period.

Ieuan was born at Caer-Gai, near Llanuwchllyn

Llanuwchllyn

Llanuwchllyn is a village in Gwynedd, Wales, near the southern end of Bala Lake . Its population according to the United Kingdom Census 2001 was 834., of which approximately 81% were Welsh-speaking....

, Merioneth (present-day Gwynedd

Gwynedd

Gwynedd is a county in north-west Wales, named after the old Kingdom of Gwynedd. Although the second biggest in terms of geographical area, it is also one of the most sparsely populated...

) and was the son of two notable poets: Tudur Penllyn

Tudur Penllyn

Tudur Penllyn was a Welsh language poet during the time of the Beirdd yr Uchelwyr, the professional poets of the late Middle Ages....

 and Gwerful Fychan

Gwerful Fychan

Gwerful Fychan was a poet during the period of the Welsh Beirdd yr Uchelwyr during the late Middle Ages. She came from a noble family, her full name in genealogies being given as Gwerful ferch Ieuan Fychan ap Ieuan ap Hywel y Gadair ap Gruffudd ap Madog ap Rhirid Flaidd, and was the heiress of the...

. Through the latter he claimed descent from Rhirid Flaidd

Rhirid Flaidd

Rhirid Flaidd , according to Welsh tradition, was the son of Gwrgenau, who is supported by an obscure and doubtful pedigree going back to Cunedda Wledig, the progenitor of the House of Cunedda which had provided the kings of Gwynedd from the end of Roman Britain until 825...

, a 12th-century nobleman of Powys.

In common with other poets of the time much of his work is "praise-poetry" directed at the Uchelwyr, or Welsh nobility, including members of the Abertanad

Llanyblodwel

Llanyblodwel is a village and civil parish in Shropshire, England; the spelling "Llanyblodwell" was commonly used in the past, and the village was sometimes simply referred to as "Blodwell". It lies 7 miles west of the nearest town, Oswestry, in the valley of the River Tanat.The parish had a...

 family and the Wynns of Gwydir

Gwydir Castle

Gwydir Castle is situated in the Conwy valley, North Wales, a mile to the west of the ancient market town of Llanrwst and to the south of the large village of Trefriw...

. Ieuan was of a gentry family himself so is unlikely to have been a 'professional' writer. His satire on the borough of Flint

Flint, Flintshire

Flint is a town in Flintshire, North Wales, lying on the estuary of the River Dee. It was the county town of the historic county of Flintshire and today is the third largest town in Flintshire. According to the 2001 Census the population of the community of Flint was 12,804...

 also survives along with several humorous disputations with the famous poet Guto'r Glyn

Guto'r Glyn

Guto'r Glyn was a Welsh language poet and soldier of the era of the Beirdd yr Uchelwyr or Cywyddwyr , the itinerant professional poets of the later Middle Ages...

.

His work has occasionally been confused in manuscripts with that of his father, and he seems to have had a sister, Gwenllian, who may also have been a poet.

His surviving poetry was edited by Thomas Roberts in 1958, in a single volume with the work of Tudur Penllyn.