Madog ap Gruffydd Maelor

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Madog ap Gruffudd or Madog ap Gruffudd Maelor, was Prince of Powys Fadog 1191-1236 in north-east Wales.


He was elder son of Gruffydd Maelor and his wife, Angharad a daughter of Owain Gwynedd.

Banner of Madog ap Gruffudd Maelor, and later the Banner of Powys Fadog

Sole Ruler[edit]

He succeeded his father jointly with his brother, Owen in 1191 and on Owen's death in 1197 became the sole ruler of Powys north of the Afon Rhaeadr and the Afon Tanat.


Madog consolidated the possessions of his father, Gruffudd Maelor, and the territory he ruled became known as Powys Fadog in his honour. (Fadog is a gender mutation of his name, Madog). Under his son, later, Gruffydd II ap Madog, this area comprising Welsh and English Maelor, Ial, Cynllaith, Nanheudwy and part of Mochnant formed Powys Fadog, as opposed to Powys Wenwynwyn and was still referred to as Powys Fadog although it was divided up between his five sons.


Madog was close to his cousin, Llywelyn ap Iorwerth, initially, but gradually distanced himself and also kept aloof from 1212 when his cousin had managed to reform the Welsh Confederacy and looked instead to King John of England, in whose pay he was, as an official ally of the English King.

By 1215 he decided to ally with his cousin and remained so.

Marriage & Issue[edit]

He had married Esyllt (Isolda). He had issue:

Establishment of and burial at Valle Crucis Abbey[edit]

On 28 January 1201, Madog founded Valle Crucis Abbey, Llangollen, Wales, a Cistercian settlement, and the last Cistercian monastery to be founded in Wales.

He is buried at Valle Crucis Abbey in the Abbey Church. The exact site of his burial is unknown.[1]

He is either a great grandfather or great-great-great grandfather of Owain Glyndŵr.

External references[edit]


  1. ^ D.H. Evans BA, FSA - Valle Crucis Abbey (2008)
  • Prof. T Jones Pierce, The History of Wales (1953)
Regnal titles
Preceded by
Gruffydd Maelor
Prince of Powys Fadog
Succeeded by
Gruffudd Maelor II