YourRoots Logo
Sign up free
banner

Sign up to explore more

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

Sign up free

Isabella "Isabel" "Countess Arundel" "Arderne" "de Hastang" Mortimer 1248 – 1274 – Genealogical Records

Birth Date: 08 Apr 1248

Birth Location: Wigmore Castle, Herefordshire, England

Death Date: bef 10 Aug 1274

Death Location: Arundel Castle, Sussex, England

Father: Roger Mortimer

Mother: Lady Braose

Spouse(s): John FitzAlan

Children(s): Joan Owen

The story of Isabella "Isabel" "Countess Arundel" "Arderne" "de Hastang" Mortimer began in 1248 in Wigmore Castle, Herefordshire, England. Isabella "Isabel" "Countess Arundel" "Arderne" "de Hastang" Mortimer married John "of Clun and Oswestry" FitzAlan, and had children including Joan St Owen. Isabella "Isabel" "Countess Arundel" "Arderne" "de Hastang" Mortimer passed away in 1274 in Arundel Castle, Sussex, England.

Find more search results for Isabella Mortimer
IM

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:
C
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

  • The story of Isabella "Isabel" "Countess Arundel" "Arderne" "de Hastang" Mortimer began in 1248 in Wigmore Castle, Herefordshire, England.
  • Isabella "Isabel" "Countess Arundel" "Arderne" "de Hastang" Mortimer married John "of Clun and Oswestry" FitzAlan, and had children including Joan St Owen.
  • Isabella "Isabel" "Countess Arundel" "Arderne" "de Hastang" Mortimer passed away in 1274 in Arundel Castle, Sussex, England.

Immediate Family

Parents

Roger Mortimer
1231 – 1282
Birth Location: Cwmaron Castle, Radnorshire, Wales
RM
Lady Braose
1226 – 1301
Birth Location: Totnes, Devonshire, England
LB

Spouses(s)

John FitzAlan
1246 – 1272
Birth Location: Clun, Shropshire, England
JF

Children(s)

Joan Owen
1255 – 1308
Birth Location: WInchester, Hampshire, England
JO

Isabella Mortimer's Ancestors

Self
Isabella Mortimer
1248 – 1274
Birth Place: Wigmore Castle, Herefordshire, England
Parents
Roger Knt "1st Baron of Wigmore" Mortimer
1231 – 1282
Cwmaron Castle, Radnorshire, Wales
Lady (Matilda "Maud" "Brewes" "Breuse") Braose
1226 – 1301
Totnes, Devonshire, England
Grandparents
Ranulph ("Baron of Wigmore" "Constable of Clun Castle") Mortimer
1190 – 1246
Wigmore Castle, Herefordshire, England
Gwladus ("Ddu, Princess of North Wales" "of Gwynedd" "de Braose" ferch) Llywelyn
1205 – 1251
Wales, Caernarvonshire, Wales
William Braose
1200 – 1230
Eva Marshal
1194 – 1246
Great-Grandparents
Roger Mortimer
1158 – 1214
Isabel Ferrers
1166 – 1252
Llywelyn Iorweth
1173 – 1240
Joan FitzJohn
1189 – 1237
Reginald Braose
1179 – 1228
Graecia Briwere
1186 – 1223
William Marshall
1146 – 1219
Isabel Clare
1172 – 1220
2nd-Great-Grandparents
Hugh Mortimer
1108 – 1150
Maud Meschines
1126 – 1190
Walchelin Ferrers
1141 – 1201
Iorweth Gwynedd
1145 – 1184
Margred Madog
1129 – 1201
John Plantagenet
1166 – 1216
Clementia nn
1165 –
William Braose
1153 – 1211
Matilda Valery
1155 – 1210
William Briwere
1145 – 1226
Beatrice Vaux
1149 – 1217
John Marshall
1105 – 1165
Sybilla Evreux
1126 – 1176
Richard Clare
Aoife MacMurrough
1145 – 1177

Isabella Mortimer's Descendants

1.
IM
Isabella ("Isabel" "Countess Arundel" "Arderne" "de Hastang") Mortimer (08 Apr 1248 – bef 10 Aug 1274) m. John ("of Clun and Oswestry") FitzAlan (14 Sep 1246 – 18 Mar 1272)
  1. 1. Joan (St) Owen (abt 1255 – 1308) m. Sir (Richard "Lord of Thunnuck" "Plantagenet" "de Cornubia") Cornwall (1252 – 30 Mar 1296)
    1. 1. Geoffrey Cornwall (abt 1288 – abt 1335) m. Margaret (de) Mortimer (14 Sep 1295 – 1345)
      1. 1. Richard Cornwall (1311 – Oct 1343) m. Sibella ("de Bottringham" "Sibyl" "Sybilla") Bodrugan (1315 – abt 1349)
        1. 1. Geoffrey Cornwall (abt 1335 – 18 May 1365) m. Cecilia ("Saint-maur") Seymour (abt 1337 – 26 Jul 1369)

Isabella Mortimer's Timeline

2 Records

1248
08 Apr 1248
Birth of Isabella "Isabel" "Countess Arundel" "Arderne" "de Hastang" Mortimer in Wigmore Castle, Herefordshire, England
Wigmore Castle, Herefordshire, England
1274
bef 10 Aug 1274
Age 26
Death of Isabella "Isabel" "Countess Arundel" "Arderne" "de Hastang" Mortimer in Arundel Castle, Sussex, England
Arundel Castle, Sussex, England

Sources

    Genealogy Event 1
    Event Type: Birth
    Event Date: 08 Apr 1248
    Event Place: Wigmore Castle, Herefordshire, England

    Genealogy Event 2
    Event Type: Death
    Event Date: bef 10 Aug 1274
    Event Place: Arundel Castle, Sussex, England
Find more search results for Isabella Mortimer

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