In response, Mortimer negotiated an alliance with Owain and married one of Owain's daughters.

* Rhys's daughter Gwenllian ferch Rhys married Rhodri ab Owain, prince of the western part of Gwynedd.

He married John's natural daughter Joan in 1205, and when John arrested Gwenwynwyn ab Owain of Powys in 1208, Llywelyn took the opportunity to annex southern Powys.

Owain was married twice, first to Gwladus ferch Llywarch ap Trahaearn, by whom he had two sons, Maelgwn ab Owain Gwynedd and Iorwerth Drwyndwn, the father of Llywelyn the Great, then to Cristin, by whom he had three sons including Dafydd ab Owain Gwynedd and Rhodri ab Owain Gwynedd.

Geoffrey also had illegitimate children by an unknown mistress ( or mistresses ): Hamelin ; Emme, who married Dafydd Ab Owain Gwynedd, Prince of North Wales ; and Mary, who became a nun and Abbess of Shaftesbury and who may be the poetess Marie de France.

* Owain Gwynedd ( Owain ap Gruffudd ), married ( 1 ) Gwladus ( Gladys ) ferch Llywarch, daughter of Llywarch ap Trahaearn ( 2 ) Cristin ferch Goronwy, daughter of Goronwy ab Owain

He married John's illegitimate daughter Joan, also known as Joanna, in 1205, and when John arrested Gwenwynwyn ab Owain of Powys in 1208 Llywelyn took the opportunity to annex southern Powys.

His brother Edmund Mortimer married the daughter of Owain Glyndŵr and was one of his staunchest supporters.

Lady Dysart ( 1889-1975 ) married Owain Edward Whitehead Greaves and was succeeded by their oldest daughter Rosamund Agnes Greaves ( born 1914 ) the eleventh Countess and in 2003 her sister Katherine Grant of Rothiemurchus ( born 1918 ), the widow of Lieutenant-Colonel John Peter Grant of Rothiemurchus M. B. E.

Angharad bore David at least four children: a daughter, Marged ( who married Owain Glyndŵr ), and three sons, Gruffudd, Philip and John.

His greatest claim to fame today, however, is that his daughter Marged or Margaret married Owain Glyndŵr, probably in 1383.

On 9 December 2006, Davis married fellow actor Owain Yeoman at St Paul's Cathedral, London.

In 1405, during the rebellion of Owain Glyndŵr, Constance, who held Caerphilly Castle, arranged the escape of Edmund Mortimer, 5th Earl of March, from Windsor Castle, apparently intending to deliver the young earl, who had the best claim to the throne of any of Henry IV's rivals, to his uncle Edmund who was married to Glyndwr's daughter.

Elisabeth also shared common descent with the Royal House of Tudor with a grandmother being a sister of of Margaret ferch Thomas married Fychan Tudor and grandmother of Henry VII and another of these sister Ellen ferch Thomas being the mother of Owain Glyndŵr " Prince of Wales ".

Edmund Mortimer died in the final battle and Owain ’ s wife Margaret along with two of his daughters ( including Catrin ) and three of Mortimer's grand-daughters were taken prisoner and incarcerated in the Tower of London.

According to Lloyd, Owain and Margaret had five sons and four ( p. 211 ) or five ( p. 199 ) daughters:

* Margaret ferch Owain Gwynedd

Margaret was descended independently from King John and his legitimised daughter Princess Joan, King John and his son Henry III and grandson Edward I. Margaret's sister Ellen ferch Thomas was the mother of Owain Glendoŵr ( the last native " Prince of Wales ").

The young Owain ap Gruffydd was possibly fostered at the home of David Hanmer, a rising lawyer shortly to be a justice of the Kings Bench, or at the home of Richard FitzAlan, 3rd Earl of Arundel.

Quickly Owain dispatched Gruffydd Young and his brother-in-law, John Hanmer, to negotiate with the French.

** Sir David Hanmer, judge, father-in-law of Owain Glyndŵr

It is also in 1402 that mention of the French and Bretons helping Owain was first heard.

Owain could also draw on Welsh troops seasoned by the English campaigns in France and Scotland.

In his book The Mystery of Jack of Kent and the Fate of Owain Glyndŵr, Alex Gibbon argues that the folk hero Jack of Kent, also known as Siôn Cent – the family chaplain of the Scudamore family – was in fact Owain Glyndŵr himself.

He is also a character in Shakespeare's Henry IV, Part 1 and was the hero of James Hill's UK TV movie Owain, Prince of Wales, broadcast in 1983 in the early days of Channel 4 / S4C.

* Owain, also celebrated for having fought the Bernicians ; son of Urien

* Gwenllian II ferch Owain Gwynedd ( also shared the same name with a sister )

The bulk of this work praises King Urien of Rheged and his son Owain mab Urien, although several of the poems indicate that he also served as the court bard to King Brochfael Ysgithrog of Powys and his successor Cynan Garwyn, either before or during his time at Urien's court.

Damage was done to the church in 1400 during the rebellion of Owain Glyndŵr ; his forces also destroyed the Bishop's Palace at Llandaff.

This was done through the formation of ' cells ', the first operating in Bangor in April 1963 by Owain Owain who also founded and edited the Society's only publication, Tafod y Ddraig (' The Dragon's Tongue ') and designed the logo.

The name derives from the founder William Madocks, though there is a belief that it is named after the folklore character Madog ab Owain Gwynedd who also gives his name to " Ynys Fadog " ( English: " Madog island ").

The historical figure of Owain became incorporated into the Arthurian cycle of legends where he is also known as Ywain, Yvain, Ewain or Uwain.

Taliesin also composed Marwnad Owain, an elegy to Owain.

A final rebellion in 1400 led by Owain Glyndŵr, a member of the rival royal house of Powys, also drew considerable support from within Gwynedd.

Denbigh was also burnt in 1400 during the revolt of Owain Glyndŵr.

The castle was largely destroyed in the early 15th century by Owain Glyndŵr's forces who also attacked and burned Abergavenny town and other settlements in the area.

The castle was captured by the Welsh during the revolt of 1287-8 and also by Owain Glyndŵr in 1403.

The War band, under Owain and then Einon, was also instrumental between 870 and 991 in repelling the Irish and Danes who continually raided South Wales during this time.

S4C has an administrative office in Caernarfon, where a cluster of independent production companies are also based or partly based including Rondo Media, Cwmni Da, Antena, Owain Roberts Animations and Tinopolis.

The latter has also been equated with the Brân fighting at Cynwyd ( northern Wales ) in the poem Gwarchan Tudfwlch, possibly against Owain of Rheged.

The names and number of Owain Glyndŵr's siblings cannot be certainly known.

Nothing certain is known of Owain after 1412.

The first known to have used such a title was Owain Gwynedd, adopting the title Prince of the Welsh around 1165 after earlier using ' rex Waliae ' ( King of Wales ).

His grandson Llywelyn the Great is not known to have used the title ' Prince of Wales ' as such, although his use, from around 1230, of the style ' Prince of Aberffraw, Lord of Snowdon ' was tantamount to a proclamation of authority over most of Wales, and he did use the title ' Prince of North Wales ' as did his predecessor Dafydd ab Owain Gwynedd.

Owain Gwynedd ap Gruffydd (; 1100 – 28 November 1170 ) was King of Gwynedd from 1137 until his death in 1170, and the first to be known as Prince of Wales.

He was known as Owain Gwynedd to distinguish him from another contemporary Owain ap Gruffydd, ruler of part of Powys who was known as Owain Cyfeiliog.

Still, Gwalchmei was clearly a traditional figure ; other early references to him include the Welsh Triads ; the Englynion y Beddau ( Stanzas of the Graves ), which lists the site of his grave ; the Trioedd y Meirch ( Triads of the Horses ), which praises his horse Keincaled ( known as Gringolet to later French authors ); and Cynddelw's elegy for Owain Gwynedd, which compares Owain's boldness to that of Gwalchmei.

Later, Oswestry was attacked by the forces of Welsh rebel leader Owain Glyndŵr during the early years of his rebellion against the English King Henry IV in 1400 ; it became known as Pentrepoeth or ' hot town ' as it was burned and nearly totally destroyed by the Welsh.

Over the centuries, the history of Owain known to storytellers faded sufficiently that he was incorporated into Welsh Arthurian legend and stories about him spread to continental Europe.

Percy and his son, Henry Percy, known as " Hotspur ", were given the task of subduing the rebellion of Owain Glyndŵr, but their attempts to make peace with the Welsh rebels did not meet with the king's approval.

Owain I ap Gruffydd succeeded his father to the greater portion of Gwynedd in accordance to Welsh law, the Cyfraith Hywel, the Laws of Hywel ; and became known as Owain Gwynedd to differiate him from another Owain ap Gruffydd, the Mathrafal ruler of Powys, known as Owain Cyfeiliog.