Biography of Eleanor Montfort Princess of Wales 1252-1282

On 23rd April 1224 William "The Younger" Marshal 2nd Earl Pembroke (age 34) and [her mother] Eleanor Plantagenet Countess Pembroke and Leicester (age 9) were married. She by marriage Countess Pembroke. The difference in their ages was 25 years. She the daughter of [her grandfather] King John of England and [her grandmother] Isabella of Angoulême Queen Consort England (age 36). He the son of William Marshal 1st Earl Pembroke and Isabel Clare Countess Pembroke. They were fifth cousins.

In 1238 [her father] Simon de Montfort 6th Earl of Leicester 1st Earl Chester (age 30) and [her mother] Eleanor Plantagenet Countess Pembroke and Leicester (age 23) were married at Westminster Palace [Map]. She by marriage Countess of Leicester. She the daughter of [her grandfather] King John of England and [her grandmother] Isabella of Angoulême Queen Consort England (age 50). He the son of [her grandfather] Simon "Elder" Montfort 5th Earl of Leicester and [her grandmother] Alix Montmorency. They were half third cousins. He a great x 2 grandson of King Henry I "Beauclerc" England.

In 1252 Eleanor Montfort Princess of Wales was born to Simon de Montfort 6th Earl of Leicester 1st Earl Chester (age 44) and Eleanor Plantagenet Countess Pembroke and Leicester (age 37). She a granddaughter of King John of England.

Around March 1275 the marriage of Llywelyn "Last" Aberffraw (age 42) and Eleanor Montfort Princess of Wales (age 23) by proxy married.

After March 1275 Eleanor Montfort Princess of Wales (age 23) was imprisoned Windsor Castle.

On 13th April 1275 [her mother] Eleanor Plantagenet Countess Pembroke and Leicester (age 60) died at Montargis Abbey.

Before 13th October 1278 Eleanor Montfort Princess of Wales (age 26) was released.

On 13th October 1278 Llywelyn "Last" Aberffraw (age 45) and Eleanor Montfort Princess of Wales (age 26) were married at Worcester Cathedral [Map]. She the daughter of Simon de Montfort 6th Earl of Leicester 1st Earl Chester and Eleanor Plantagenet Countess Pembroke and Leicester. They were first cousin once removed. He a great grandson of King John of England. She a granddaughter of King John of England.

Letters. 8th July 1279. Letter XVIII. Eleanora Princess of Wales (age 27) to her cousin Edward I (age 40).

To her excellent lord and well-beloved cousin, the Lord Edward, by the grace of God king of England, lord of Ireland, and dake of Aquitaine, his devoted cousin Eleonora, princess of Wales, lady of Snowdon, with such sincere affection as becometh, sends health to so great and so near a kinsman.

Be it known to your excellency, that we desire to hear good and prosperous news concerning your state and condition: therefore we entreat your excellency, humbly and earnestly, for our love's sake, that you deign to make known to us, as your humble cousin, and one ready to do your good pleasures, your state; and whether you wish any thing within our power which may redound to your honour^ or may please your majesty.

Although, as we have heard, the contrary hereto hath been reported of us to your excellency by some; and we believe, notwithstanding, that you in no wise give credit to any who report unfavourably concerning our lord and ourself, until you learn from ourselves if such speeches contain truth: because you shewed, of your grace, so much honour and so much friendliness to our lord and ourself, when you were at the last time at Worcester.

Wherefore, whatever you shall demand from us in this, or other matters that you wish, we shall ever be ready, according to our ability, to execute and accomplish.

Given at Llanmaes [Map], the 8th day of July.

In June 1282 [her daughter] Gwenllian "Lady of Wales" Aberffraw was born to [her husband] Llywelyn "Last" Aberffraw (age 49) and Eleanor Montfort Princess of Wales (age 30) at Abergwyngregyn Bangor. She a great granddaughter of King John of England. Coefficient of inbreeding 1.74%.

On 19th June 1282 Eleanor Montfort Princess of Wales (age 30) died in childbirth.