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Birth:          9 Oct 1200 of Pembrokeshire, Wales
Christening:    Apr 1206 St. Davids, Pembrokeshire, Wales
Death:          17 Jan 1240 Berkhamstead, Hertfordshire, England
Burial:         Beauliew, Southampton, Hampshire, England

Notes
ancestry.com
https://en.wikipedia.org/wiki/Isabel_Marshal
Isabel Marshal (9 October 1200 – 17 January 1240) was a medieval English countess. 
She was the wife of both Gilbert de Clare, 4th Earl of Hertford and 5th Earl of 
Gloucester and Richard, 1st Earl of Cornwall (son of King John of England). With the 
former, she was a great grandparent of King Robert the Bruce of Scotland.
Family[edit]

Born at Pembroke Castle, Isabel was the seventh child, and second daughter, of 
William Marshal, 1st Earl of Pembroke and Isabel de Clare. She had 9 siblings: 4 
sisters and 5 brothers, who included the 2nd, 3rd, 4th, 5th and 6th Earls of Pembroke; 
each of her brothers dying without a legitimate male heir, thus passing the title on to 
the next brother in line. Her last brother to hold the title of Earl of Pembroke died 
without legitimate issue, and the title was passed down through the family of Isabel's 
younger sister Joan. Her sisters married, respectively, the Earls of Norfolk, Surrey, and 
Derby; the Lord of Abergavenny and the Lord of Swanscombe.

First marriage[edit]

On her 17th birthday, Isabel was married to Gilbert de Clare, 4th Earl of Hertford and 
5th Earl of Gloucester, who was 20 years her senior, at Tewkesbury Abbey. The 
marriage was an extremely happy one, despite the age difference, and the couple had 
six children:
Agnes de Clare (b. 1218)
Amice de Clare (1220–1287), who married the 6th Earl of Devon
Richard de Clare, 6th Earl of Hertford (1222–1262)
Isabel de Clare (2 November 1226– 10 July 1264), who married the 5th Lord of 
Annandale; through this daughter, Isabel would be the great grandmother of Robert 
the Bruce
William de Clare (1228–1258)
Gilbert de Clare (b. 1229), a priest

Isabel's husband Gilbert joined in an expedition to Brittany in 1229, but died 25 
October 1230 on his way back to Penrose, in that duchy. His body was conveyed 
home by way of Plymouth and Cranborne, to Tewkesbury, where he was buried at the 
abbey.

Second marriage[edit]

Isabel was a young widow, only 30 years old. She had proven childbearing ability and 
the ability to bear healthy sons; as evidenced by her six young children, three of whom 
were sons. These were most likely the reasons for both the proposal of marriage from 
Richard, 1st Earl of Cornwall, and Isabel's acceptance of it, despite the fact that her 
husband had been dead for only five months. The two were married on 30 March 1231 
at Fawley Church, much to the displeasure of Richard's brother King Henry, who had 
been arranging a more advantageous match for Richard. Isabel and Richard got along 
well enough, though Richard had a reputation as a womanizer and is known to have 
had mistresses during the marriage. They were the parents of four children, three of 
whom died in the cradle.
John of Cornwall (31 January 1232 – 22 September 1233), born and died at Marlow, 
Buckinghamshire, buried at Reading Abbey
Isabella of Cornwall (9 September 1233 – 10 October 1234), born and died at Marlow, 
Buckinghamshire, buried at Reading Abbey
Henry of Almain (2 November 1235 – 13 March 1271), murdered by his cousins Guy 
and Simon de Montfort, buried at Hailes Abbey.
Nicholas of Cornwall (b. & d. 17 January 1240 Berkhamsted Castle), died shortly after 
birth, buried at Beaulieu Abbey with his mother

Death and burial[edit]

Isabel died of liver failure, contracted while in childbirth, on 17 January 1240, at 
Berkhamsted Castle. She was 39 years old.

When Isabel was dying she asked to be buried next to her first husband at 
Tewkesbury Abbey, but Richard had her interred at Beaulieu Abbey, with her infant 
son, instead. As a pious gesture, however, he sent her heart, in a silver-gilt casket,[1] 
to Tewkesbury.

Parents
MARSHALL William (ABT 1144 - 14 May 1219)
FITZGILBERT DE CLARE Isabel (1172 - 1220)

Siblings
MARSHALL Sibyl (ABT 1188 - 27 Apr 1245)
MARSHALL Maud (Matilda) (ABT 1192 - 27 Mar 1248)
MARSHALL Isabel (9 Oct 1200 - 17 Jan 1240)
MARSHALL Joane (ABT 1202 - ABT 1234)
MARSHALL Eve (1203 - 1246)

Marriage To DE CLARE Gilbert (1182 - 25 Oct 1230)
    m.  

Notes

Parents
DE CLARE Richard (ABT 1153 - 30 Dec 1218)
FITZ ROBERT Amice (ABT 1155 - 1 Jan 1225)

Children by DE CLARE Gilbert 1182 - 25 Oct 1230
DE CLARE Roese (ABT 1218 - )
DE CLARE Avicia (Amica) (27 May 1220 - )
DE CLARE Richard (4 Aug 1222 - 14 Jul 1262)
DE CLARE Isabel (8 Nov 1226 - AFT 10 Jul 1264)
DE CLARE William (18 May 1228 - 28 Jul 1258)

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