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Owain ap Gruffydd King of Gwynedd, Prince of North Wales
(Abt 1090-1170)
Gwladus verch Llywarch of South Wales
(Cir 1125-1190)
Madog ap Maredydd Prince of Powys
(Abt 1091-1160)
Susanna verch Gruffydd of Gwynedd
(Abt 1095-)
Iorwerth "Drwyndwn" ap Owain Prince of North Wales
(1145-Abt 1174)
Marared verch Madog
(Abt 1129-)
Llywelyn "Fawr" ap Iorwerth the Great" Prince of Wales


Family Links

1. Tangwystl verch Goch

2. Joan Plantagenęt

Llywelyn "Fawr" ap Iorwerth the Great" Prince of Wales

  • Born: 1173, Aberffraw Castle, Caernarvonshire, Wales 1012
  • Partnership (1): Tangwystl verch Goch 160,1012,1092
  • Marriage (2): Joan Plantagenęt in 1205 160,528,1012
  • Died: 11 Apr 1240, Aberconwy, Carnarvonshire, Wales at age 67 1012
  • Buried: Abbey of Aberconwy, Carnarvonshire, Wales 1012

bullet  General Notes:

~Ancestral Roots of Certain American Colonists Who Came to America before 1700, 8th Edition:

27:27, "Joan, natural daughter of King John of England by unknown mistress," and Princess of North Wales, m. Llywelyn ap Iorwerth, Prince of Wales

29A:27 gives Llwelyn's birth date as 1173, death date at Aberconway, 11 Apr 1240, child, Margaret, wife of John de Braose

132C:29, gives Llwelyn's child, Gladys Dhu wife of Ralph de Mortimer

176B:27, Llywelyn ap Iorwerth, the Great, Prince of North Wales, b. 1173, d. 11 Apr 1249; m. 1205, Joan, Princess of Wales, natural daughter of John, King of England. He had a mistress, one of who was Tanglwystl the mother of Gladys Dhu

236:7 & 254:28, married Joan, daughter of King John

260:31, father of Gruffydd ap Llywelyn, father of Llywelyn ap Gruffydd, who married Eleanor de Montfort.

bullet  Information about this person:

• Web Reference: Dictionary of Welsh Biography, Llywelyn ap Iorwerth or Llywelyn the Great. 1012
Prince of Gwynedd, son of Iowerth Drwyndwn by Margaret, daughter of Madog ap Maredydd. He married Joan, the natural daughter of King John of England.

• Web Reference: Llywelyn ap Iorwerth Ancestor Table.

• Web Reference: Llywelyn the Great

Llywelyn had a relationship with Tangwystl verch Goch.160,1012,1092

Llywelyn next married Joan Plantagenęt, daughter of John Lackland Plantagenęt King Of England and Clemence (?) "Mistress of John Lackland", in 1205 160,1012.,1092 (Joan Plantagenęt was born before 1200 in London, Middlesex, England,1092 died in Feb 1237 in Arlechwedd Isaf, Aberconwy, Caernarvonshire, Wales 1012,1092 and was buried in 1237 in Llanvaes, Anglesey, Wales 1012,1092.)

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This Web Page was Updated 24 Feb 2014