Gilbert  (Clare) FitzGilbert

Gilbert (Clare) FitzGilbert (abt. 1100 - 1148)

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Gilbert "1st Earl of Pembroke" FitzGilbert formerly Clare aka de Clare
Born about in Tunbridge, Kent, Englandmap
Ancestors ancestors
Husband of — married before [location unknown]
Descendants descendants
Died in Tintern Abbey, Chapel Hill, Monmouthshire, Englandmap
Clare-569 created 20 Mar 2013 | Last modified
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Categories: The Anarchy.

European Aristocracy
Gilbert (Clare) FitzGilbert is a member of royalty, nobility or aristocracy in the British Isles.
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Gilbert de Clare "Strongbow"[1]


Gilbert de Clare, 1st Earl of Pembroke

  • Gilbert fitz Gilbert de Clare (c.1100 - 6 Jan 1148/9), son of Gilbert FitzRichard and Alice de Claremont, was sometimes referred to as "Strongbow", although his son is better remembered by this name, was the first Earl of Pembroke from 1138.
  • Gilbert de Clare, 2nd son of Gilbert de Tonebruge, feudal Lord of Clare, and brother of Richard de Clare, 1st Earl of Hertford[2][3]
  • built 2 strong castles[2]
  • 1138: created Earl of Pembroke by King Stephen.[2][4]


Gilbert (FitzGilbert) de Clare [5][6] [7]
1st Earl of Pembroke[5]
Birth 21 SEP 1100 Tunbridge, Kent[5][7][8]
Death 1149 England[5]
Burial ABT 1149 Tintern Abbey, Chapel Hill, Monmouthshire[5][7]


m. abt 1130 Isabel (Elizabeth) de BEAUMONT (c.1102 - c.1172)[9][2]
  • Agnes
  • Baldwin
Question: Did he also marry Rohese Giffard, possibly the mother of Avice
Answer: No.

Gilbert fitzGilbert de Clare did not marry Rohese Giffard, mother of Avice Clare. Rohese was Gilbert de Clare's paternal grandmother.

The Anarchy

After Stephen's defeat at Lincoln on 2 February 1141, Gilbert was among those who rallied to Empress Matilda when she recovered London in June, but he was at Canterbury when Stephen was recrowned late in 1141. He then joined Geoffrey's plot against Stephen, but when the conspiracy collapsed, he went back to Stephen, and was with him at the siege of Oxford late in 1142.


In 1147 he rebelled when Stephen refused to give him the castles surrendered by his nephew Gilbert, 2nd Earl of Hertford, whereupon the King marched to his nearest castle and nearly captured him. However, the Earl appears to have made his peace with Stephen before his death the following year.



  1. Guillaume de Jumièges; Liber Vitæ of Thorney abbey
  2. 2.0 2.1 2.2 2.3
    Sir Bernard Burke, Dormant and Extinct Peerages, Burke's Peerage, London, 1883, p. 120, Clare, Earls of Pembroke
  3. BURKE: having obtained from King Henry I a license to enjoy all the lands he should win in Wales, marched a large force Cardiganshire and brought the whole country under subjection.
  4. Stephen created him Earl of Pembroke, and gave him the rape and castle of Pevensey. Gilbert de Clare decided to live near the roof in the Great Hall so he could see what was going on at all times.
  5. 5.0 5.1 5.2 5.3 5.4 Medieval Lands, database online, author Charles Cawley, (Foundation for Medieval Genealogy, 2006-2013), England, Earls created 1067, Chapter 10, Pembroke: A. EARLS of PEMBROKE 1138-[1185/86] (CLARE), Gilbert de Clare
  7. 7.0 7.1 7.2 Sources listed: LDS and
  8. Born at Tonbridge, Gilbert de Clare was a baron ... tenant-in-chief, obtaining estates of paternal uncles, Roger and Walter, which included baronies and castles of Bienfaite and Orbec in Normandy, Nether Gwent lordship, and Striguil castle (later Chepstow).
  9. m. Isabel de Beaumont (c. 102 - c.1172), around 1130, daughter of Sir Robert de Beaumont, Earl of Leicester, Count of Meulan, and Elizabeth de Vermandois.
    Isabel was previously the mistress of Henry I of England. She and Gilbert had 2 daughters (Agnes and Basilia) and two sons (Baldwin and Richard.);
    BURKE: He married Elizabeth, sister of Waleran, Earl of Mellent, and daughter of Robert, Earl of Leicester, and had issue, Richard, his successor, Baldwin, and Basilia. The earl died in 1149 and was succeeded by his elder son, Richard de Clare.
  • "Royal Ancestry" 2013, Douglas Richardson Vol. II. p. 173
  • "Royal Ancestry" 2013, Douglas Richardson Vol. IV. p. 336-339
  • "Royal Ancestry" 2013, Douglas Richardson Vol. V. page 273


  • 2nd son; created 1st Earl of Pembroke 1138; nephew of Roger and Walter; uncle of Gilbert, 1st Earl of Hertford; married Isabel (Elizabeth) Beaumont (1107)
  • It appears probable that estimated birth dates for parents and children are 10-20 years too early--Michel L. Call
  • Burke's Dormant and Extinct Peerage, p. 120

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No known carriers of Gilbert's Y-chromosome or his mother's mitochondrial DNA have taken yDNA or mtDNA tests.

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De Clare Family Coat of Arms
De Clare Family Coat of Arms

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On 23 Oct 2011 at 23:30 GMT Aran Stubbs wrote:

I show a birth in September 21, 1100 Tunbridge, Kent, England.

On 20 Sep 2011 at 10:39 GMT Stephen Richard Wilkinson wrote:

Plenty of de Clare duplicates - and I think that there are others with alternative Surnames, or pseudonyms. Can be expected from such an influential family with prodigious offspring!

Visited Goodrich Castle last week, originally built by Robert (1130-1176, son of Gilbert. Brilliant experience.

Try reading "Strongbow: The Story of Richard and Aoife" by Morgan Llywelyn; Additionally, "The Greatest Knight: The Story of William Marshal" by Elizabeth Chadwick and "William Marshal: The Flower of Chivalry" by Duby Georges are good for de Clare descendents.

Gilbert is 25 degrees from Kevin Bacon, 28 degrees from Robynne Lozier, 19 degrees from Pocahontas Rolfe and 23 degrees from Queen Elizabeth II Windsor on our single family tree. Login to find your connection.

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