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

Roger III De Mortimer 1221 – 1282 – Genealogical Records

Birth Date: 1221

Birth Location: Cwmaron Castle, Radnorshire, , Wales

Death Date: 27 Oct 1282

Death Location: Kingsland, Herefordshire, , England

Father: Ralph DeMortimer

Mother: Gwladys Llewelyn

Spouse(s): Maud DeBraose

Children(s): Isabella DeMortimer, Alicia Mortimer, Isabella DeMortimer, Ralph DeMortimer, Edmund DeMortimer, Geoffrey DeMortimer, Roger DeMortimer, Isolde deMortimer, Margaret Mortimer, Lord Ireland

The story of Roger III De Mortimer began in 1221 in Cwmaron Castle, Radnorshire, , Wales. Roger III De Mortimer married Maud DeBraose, and had children including Isabella DeMortimer, Alicia Mortimer, Isabella DeMortimer, Ralph DeMortimer, Edmund DeMortimer, Geoffrey DeMortimer, Roger DeMortimer, Isolde Iseude deMortimer, Margaret Mortimer, Lord Lieutenant Of Ireland. Roger III De Mortimer passed away in 1282 in Kingsland, Herefordshire, , England.

Find more search results for Roger Mortimer
RM

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:
B
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 Roger III De Mortimer began in 1221 in Cwmaron Castle, Radnorshire, , Wales.
  • Roger III De Mortimer married Maud DeBraose, and had children including Isabella DeMortimer, Alicia Mortimer, Isabella DeMortimer, Ralph DeMortimer, Edmund DeMortimer, Geoffrey DeMortimer, Roger DeMortimer, Isolde Iseude deMortimer, Margaret Mortimer, Lord Lieutenant Of Ireland.
  • Roger III De Mortimer passed away in 1282 in Kingsland, Herefordshire, , England.

Immediate Family

Parents

Spouses(s)

Children(s)

Roger Mortimer's Ancestors

Self
Roger Mortimer
1221 – 1282
Birth Place: Cwmaron Castle, Radnorshire, , Wales
Parents
Ralph DeMortimer
1190 – 1246
Wigmore, Herefordshire, , England
Gwladys (Verch) Llewelyn
1205 – 1251
, Caernarvonshire, , Wales
Grandparents
Roger DeMortimer
1158 – 1214
Wigmore, Herefordshire, , England
Isabel DeFerrers
1166 – 1252
Wigmore, Herefordshire, , England
Llewelyn (Ap) Iorwerth
1173 – 1240
Aberffraw Castle, Caernarvonshire, , Wales
Tangwystl (Verch) Llywarch
1168 – 1207
Rhos, Denbighshire, , Wales
Great-Grandparents
2nd-Great-Grandparents

Roger Mortimer's Descendants

1.
RM
Roger (III De) Mortimer (1221 – 27 Oct 1282) m. Maud DeBraose (1226 – 20 Mar 1301)
  1. 1. Isabella DeMortimer (1226 – 1269)
  2. 2. Alicia Mortimer (1247 – 1280)
  3. 3. Isabella DeMortimer (1248 – 1274) m. John Fitzalan (14 Sep 1246 – 18 Mar 1272)
    1. 1. Joan Fitzalan (1260 – 1300)
    2. 2. Joan FitzAlan (1262 – )
    3. 3. Maud Fitzalan (1263 – 1298)
    4. 4. Richard Fitzalan (3 Feb 1267 – 9 Mar 1302)
    5. 5. th (Earl Fitz Alan Sir) Richard (3 Feb 1267 – 9 Mar 1302)
    6. 6. Matilda (Fitz) Alan (1269 – )
    7. 7. John (Fitz) Alan (1271 – )
    8. 8. Amy Fitzalan (1273 – )
    9. 9. Edmund Fitzalan (1 May 1273 – 17 Nov 1326)
    10. 10. Eleanor FitzAlan (1277 – Jul 1328) m. Henry dePercy (25 Mar 1273 – Oct 1314)
      1. 1. WILLIAM PERCY (1301 – 1355)
      2. 2. Henry DePercy (6 Feb 1301 – 26 Feb 1352) m. Idonea DeClifford (1300 – 24 Aug 1365)
        1. 1. Isabel dePercy (1299 – 1368)
        2. 2. Henry DePercy (1320 – 18 May 1368) m. Mary Plantagenet (1320 – 1 Sep 1362)
        3. 3. Roger dePercy (1324 – )
        4. 4. Robert dePercy (1326 – )
        5. 5. Isabel dePercy (1326 – 25 May 1368)
        6. 6. Alianore (Eleanor) dePercy (1326 – 3 Sep 1376)
        7. 7. Henry Percy (1331 – )
        8. 8. Richard dePercy (1333 – 8 Aug 1369)
        9. 9. Maud DePercy (1335 – 18 Feb 1379)
        10. 10. Margaret dePercy (1336 – 1368)
        11. 11. Isabella Percy (1344 – 1371)
        12. 12. Margaret Grendon (1378 – )
    11. 11. Isolde Mortimer (4 Aug 1338 – )
  4. 4. Ralph DeMortimer (1250 – 10 Aug 1274)
  5. 5. Edmund DeMortimer (1252 – 17 Jul 1304)
  6. 6. Geoffrey DeMortimer (1254 – )
  7. 7. Roger DeMortimer (1256 – 3 Aug 1326)
  8. 8. Isolde (Iseude) deMortimer (1265 – 1338)
  9. 9. Margaret Mortimer (1269 – 1296)
  10. 10. Lord (Lieutenant Of) Ireland (1287 – 1330)

Roger Mortimer's Timeline

2 Records

1221
1221
Birth of Roger III De Mortimer in Cwmaron Castle, Radnorshire, , Wales
Cwmaron Castle, Radnorshire, , Wales
1282
27 Oct 1282
Age 61
Death of Roger III De Mortimer in Kingsland, Herefordshire, , England
Kingsland, Herefordshire, , England

Sources

    Genealogy Event 1
    Event Type: Birth
    Event Date: 1221
    Event Place: Cwmaron Castle, Radnorshire, , Wales
    Record Source: Millennium File

    Genealogy Event 2
    Event Type: Death
    Event Date: 27 Oct 1282
    Event Place: Kingsland, Herefordshire, , England
    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