Iorwerth ab Owain

Abt 1130 - 1174  (44 years)

• Name	Iorwerth ab Owain
  Birth	Abt 1130	Yorkshire, England
  Gender	Male
  Death	1174	Yorkshire, England
  Person ID	I9556	footsteps
  Last Modified	1 Jul 2025

  
  

  Father	Owain ap Gruffydd, King of Gwynedd ,   b. Abt 1100, Yorkshire, England d. 23 Nov 1170, Yorkshire, England (Age 70 years)
  Relationship	natural
  Mother	Gwladys ferch Llywarch,   b. 1098, Yorkshire, England d. 1155, Yorkshire, England (Age 57 years)
  Relationship	natural
  Family ID	F5166	Group Sheet  |  Family Chart

  
  

  Family	Margred ferch Madog,   b. Abt 1130, Yorkshire, England d. Abt 1201, Gwynedd, Wales (Age 71 years)
  Marriage	1163	Yorkshire, England
  Children	+ 1. Llewelyn Iorwerth, King Of North Wales ,   b. 11 Nov 1173, Caervonshire, Wales d. 11 Apr 1240, Yorkshire, England (Age 66 years)  [Father: natural]  [Mother: natural]
  Family ID	F5167	Group Sheet  |  Family Chart
  Last Modified	1 Jul 2025

  
  

• Notes

  Iorwerth mab Owain Gwynedd, known as Iorwerth Drwyndwn ('the flat-nosed ' ; c . 1 1 3 0 - 1174), was the eldest legitimate son of Owain Gwynedd (the k i n g o f G w ynedd) and his first wife Gwladus ferch Llywarch. He married M a r a r e d ferch Madog. His son Llywelyn ab Iorwerth eventually united the r e a l m a n d became known as Llywelyn Fawr ('the Great'); he is one of Wale s ' s m o s t famous monarchs. Iorwerth received Nant Conwy as his inheritan c e f r o m h is father, Owain Gwynedd. However, he did not receive the crow n s u c c e ssion, as was the normal tradition, because of his nose defect. J. E. Lloyd states that Iorwerth was killed in battle at Pennant Melang e l l , i n P owys, in 1174 during the wars deciding the succession followin g t h e d e a th of his father.