YourRoots by Genomelink
banner

Sign up to explore more

Create a free account to navigate family trees, view ancestors, and discover connections.

Isabel Fitzgilbert DeClare 1172–1220 – Genealogical Records

Birth Date: Feb 1172

Birth Location: Pembroke, Pembrokeshire, Wales

Death Date: 14 May 1220

Death Location: Tintern Abbey, Pembrokes, Wales

Father: Richard Clare

Mother: Lady Leinster

Spouse(s): William Marshall

Children(s): Sibyl Marshall

In 1172, Isabel Fitzgilbert DeClare entered the world in Pembroke, Pembrokeshire, Wales, born to Richard Fitzgilbert Strongbow 2Nd Earl Of Pembroke King Of Leinster De Clare And Lady Eva Aoife Countess Pembroke Princess Of Ireland Mcmurrough Leinster. Isabel Fitzgilbert DeClare married William 3Rd Earl Pembroke Marshall, and had children including Sibyl Marshall. Isabel Fitzgilbert DeClare passed away in 1220 in Tintern Abbey, Pembrokes, Wales.

Find more search results for Isabel DeClare
ID

Reliability Score

This score reflects the reliability of the source family tree. A high rating indicates a trustworthy source with strong data consistency.

Reliability Score:
A
Criteria:
  • A 3 criteria (Strong)
  • B 2 criteria (Medium)
  • C 1 criteria (Basic)
  • N/A 0 criteria (Insufficient)

This tree's reliability score:

  • Record available
  • Descendant's record available
  • Star tree owner

Biography

  • In 1172, Isabel Fitzgilbert DeClare entered the world in Pembroke, Pembrokeshire, Wales, born to Richard Fitzgilbert Strongbow 2Nd Earl Of Pembroke King Of Leinster De Clare And Lady Eva Aoife Countess Pembroke Princess Of Ireland Mcmurrough Leinster.
  • Isabel Fitzgilbert DeClare married William 3Rd Earl Pembroke Marshall, and had children including Sibyl Marshall.
  • Isabel Fitzgilbert DeClare passed away in 1220 in Tintern Abbey, Pembrokes, Wales.

Immediate Family

Parents

Spouses(s)

Children(s)

Isabel DeClare's Ancestors

Self
Isabel DeClare
1172–1220
Birth Place: Pembroke, Pembrokeshire, Wales
Parents
Richard Fitzgilbert Strongbow 2nd 'Earl of Pembroke' King of Leinster De Clare
1130–1176
Tonbridge, Kent, England
Lady (Eva Aoife - Countess Pembroke Princess Of Ireland McMurrough) Leinster
1140–1177
Leinster, Ireland
Grandparents
Gilbert, (1st Earl Pembroke De) Clare
1100–1148
Tonbridge, Kent, England
Isabel (Elizabeth de Meulan Countess of Pembroke De Beaumont (Previously was mistress of Henry I, King of) England.)
1102–1148
Meulan, Yvelines, Ile-de-France, France
Diarmait (Dermot Mac Murrough MacMurchada N Ngall of Ireland King of) Leinster
1110–1171
Ferns, Leinster, Wexford, Ireland
Mor ((Mor Tuathail Mor ingen Muirchertaig Ua (MacMurrough)) O'Toole 1st Wife, Queen Consort of) Leinster
1114–1171
Castledermot, Kildare, Ireland
Great-Grandparents
Gilbert Clare
1065–1114
Alice Claremont
1074–1117
ROBERT BEAUMONT
1046–1118
Elizabeth Vermandois
1081–1131
Donnchad MacMurchada
1085–1115
Orlaith (E)
1090–1140
Muirchertach Ui-Muiredaig
1095–1164
Cacht Muiredaig
1085–1149
2nd-Great-Grandparents
Richard Clare
1024–1090
Rohese Buckingham
1034–1117
Hugh Comte
1030–1101
Margaret Clermont
1035–1110
Roger Beaumont
1022–1094
Lady Meulan,
1014–1081
Prince France
1051–1102
Adelheid deCleremont
1050–1120
Murchad Meicm
1032–1070
Sadb Macbricc
1020–1070
Gilla Braenain
1055–1120
Uchdelb Gairbita
1070–1090
Gilla Tuathail
1055–1119
Sadb Domnail
1050–1092
Loigsech Gormgflaith
1062–1149
Gormflaith O'Caellaide
1065–1152

Isabel DeClare's Descendants

1.
ID
Isabel (Fitzgilbert) DeClare (Feb 1172–14 May 1220) m. William ((3rd Earl Pembroke)) Marshall (12 May 1146–14 May 1219)
  1. 1. Sibyl Marshall 1209–1245 m. William (III '5th Earl of Derby' De) Ferrers 1193–1254
    1. 1. Joan DeFerrers 1232–1267 m. William CHAMPERNON 1232–1304
      1. 1. Lady (Denise) Champernon 1268–1309 m. Lord (William) Botreaux 1264–1341
        1. 1. Ralph Botreaux 1304–1378 m. Lady (Catherine) Thwing 1311–1374

Isabel DeClare's Timeline

2 Records

1172
Feb 1172
Birth of Isabel Fitzgilbert DeClare in Pembroke, Pembrokeshire, Wales
Pembroke, Pembrokeshire, Wales
1220
14 May 1220
Age 48
Death of Isabel Fitzgilbert DeClare in Pembroke, Pembrokeshire, Wales
Pembroke, Pembrokeshire, Wales

Sources

    Genealogy Event 1
    Event Type: Birth
    Event Date: Feb 1172
    Event Place: Pembroke, Pembrokeshire, Wales
    Record Source:
    [1] Millennium File
    [2] Netherlands, GenealogieOnline Trees Index

    Genealogy Event 2
    Event Type: Death
    Event Date: 14 May 1220
    Event Place: Pembroke, Pembrokeshire, Wales
    Record Source:
    [1] Millennium File
    [2] Netherlands, GenealogieOnline Trees Index

    Genealogy Event 3
    Event Type: Burial
    Event Place: Tintern Abbey, Pembrokes, Wales
    Record Source: Millennium File

About YourRoots

Family Tree Map

Explore your family tree geographically

Import your GEDCOM file to transform your family tree into an interactive global map. See your roots laid out visually and understand your true geographic heritage.

Powerful tools like "Trace Back To Me" instantly map your family's migration paths from a chosen ancestor all the way back to you.

LEARN MORE
AI Genealogy Research

Discover ancestors beyond "end-of-line" automatically

Import your family tree and let AI expand it for you. AI Ancestor Finder scans "end-of-line" ancestors to uncover their parents across hundreds of family lines at once. AI Deep Research analyzes selected ancestors and family clusters, suggesting relevant records and next steps.

Turn on Auto Research Mode to get new discoveries daily or weekly, so your tree keeps growing even while you're away.

LEARN MORE
DNA Match

Find more DNA matches across all DNA tests

Combine your DNA data with your family tree to unlock the full power of YourRoots DNA Match. Connect with relatives across major testing services — Ancestry, 23andMe, MyHeritage, and more.

View your matches' maps and trees to identify shared ancestors, and soon you'll be able to add them directly to your own tree and map.

LEARN MORE
Ancestry Reports

Ancestry DNA analysis that goes deeper than others

Unlock exclusive reports that reveal your deeper origins.

  • Deep Ancestry Report — Analyze 130+ ethnicities, sub-regions, and 1,800+ communities in one detailed view.
  • Global & Native American Reports — Developed with Stanford researchers to uncover hidden ancestries across all 22 chromosomes.
  • Ancient DNA Series — Compare your DNA with 1,000+ ancient genomes from Viking, Celtic, and early American civilizations.
LEARN MORE