YourRoots by Genomelink
banner

Sign up to explore more

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

Isabel Beaumont House of Brienne, Duchess of Lancaster 1315–1359 – Genealogical Records

Birth Date: 1315

Birth Location: Loughborough Castle, Loughborough, Leicestershire, England

Death Date: 24 Mar 1359

Death Location: died of the plague, Leicester Castle, Leicestershire, England

Father: Henry Bannockburn

Mother: Alice Buchan

Spouse(s): Henry Leicester

Children(s): Maud Leicester, Blanche Lancaster

The story of Isabel Beaumont House of Brienne, Duchess of Lancaster began in 1315 in Loughborough Castle, Loughborough, Leicestershire, England. Isabel Beaumont House of Brienne, Duchess of Lancaster married Henry Of Grosmont Plantagenet Of Lancaster K G 1St Duke 100 Years War Earl Of Derby And Leicester, and had children including Blanche Plantagenet Of Lancaster Duchess Of Lancaster, Maud Plantagenet Countess Of Leicester. Isabel Beaumont House of Brienne, Duchess of Lancaster passed away in 1359 in died of the plague, Leicester Castle, Leicestershire, England.

Find more search results for Isabel Lancaster
IL

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

  • The story of Isabel Beaumont House of Brienne, Duchess of Lancaster began in 1315 in Loughborough Castle, Loughborough, Leicestershire, England.
  • Isabel Beaumont House of Brienne, Duchess of Lancaster married Henry Of Grosmont Plantagenet Of Lancaster K G 1St Duke 100 Years War Earl Of Derby And Leicester, and had children including Blanche Plantagenet Of Lancaster Duchess Of Lancaster, Maud Plantagenet Countess Of Leicester.
  • Isabel Beaumont House of Brienne, Duchess of Lancaster passed away in 1359 in died of the plague, Leicester Castle, Leicestershire, England.

Immediate Family

Parents

Henry Bannockburn
1288–1339
Birth Location: Buchan, Aberdeenshire, Scotland
HB
Alice Buchan
1289–1349
Birth Location: Buchan, Aberdeenshire, Scotland
AB

Spouses(s)

Henry Leicester
1310–1361
Birth Location: Grosmont Castle, Grosmont, Monmouthshire, England
HL

Children(s)

Maud Leicester
1339–1362
Birth Location: Kidwelly, Carmarthenshire, Wales
ML
Blanche Lancaster
1341–1369
Birth Location: Bolingbroke Castle, Lincolnshire, England
BL

Isabel Lancaster's Ancestors

Self
Isabel Lancaster
1315–1359
Birth Place: Loughborough Castle, Loughborough, Leicestershire, England
Parents
Henry 'disinherited' Beaumont, Earl, Knight of Folkingham, Joint Warden of Scotland, Privy Councillor, Constable of England, Battle of Bannockburn
1288–1339
Buchan, Aberdeenshire, Scotland
Alice (Comyn, Countess of) Buchan
1289–1349
Buchan, Aberdeenshire, Scotland
Grandparents
Louis (de Brienne Beaumont, The Vicomte) Beaumont-le-Maine
1235–1297
Acre Castle, Hazafon, Palestine
Lady (Agnes De Beaumont, The Viscountess) Beaumont-le-Maine
1235–1301
Château de Beaumont-sur-Sarthe,Sarthe,Maine,France
Great-Grandparents
Sir Constantinople
1170–1237
Berenguela consort
1198–1237
2nd-Great-Grandparents
Érard general
–1191
Alfonso León
1171–1230
Berenguela Castilla
1180–1246

Isabel Lancaster's Descendants

1.
IL
Isabel (Beaumont House of Brienne, Duchess of) Lancaster (1315–24 Mar 1359) m. Henry (of Grosmont Plantagenet of Lancaster, K.G., 1st Duke; 100 Years War, Earl of Derby and) Leicester (1310–24 Mar 1361)
  1. 1. Maud (Plantagenet, Countess of) Leicester 1339–1362 m. Willem (V Bayern) (Wittelsbach) 1330–1389 m. Ralph Stafford 1336–1347
  2. 2. Blanche (Plantagenet of Lancaster, Duchess of) Lancaster 1341–1369 m. Sir (John Gaunt Plantagenet, Duke of) Lancaster 1340–1398
    1. 1. Henry (IV Bolingbroke Lancaster branch of Plantagenets, King of England (1399 to 1413), KG, unsuccessful siege of Vilnius, deposed King Richard) II 1367–1413 m. Mary (de) Bohun 1368–1394 m. Joan (of Navarre, Queen of England, Duchess of) Brittany 1370–1437
      1. 1. Henry (V Plantagenet, King of England; Lord of Ireland, 100 Years War: Battle) Agincourt 1387–1422 m. Catherine (of Valois, Dowager Queen of England, Countess of) Charolais 1401–1437
        1. 1. Henry (VI Plantaganet of Lancaster, King of England and France, Lord of Ireland, defeated Battle of Castillon 1453 – end of Hundred Years War; lost most of) France 1421–1471 m. Margaret (Anjou, Queen Consort of) England 1430–1482
        2. 2. Mary Plantagenet 1421–1487
        3. 3. Catherine Tudor 1437–1436
        4. 4. Dafydd Owen 1434–1501
        5. 5. Thomas Tudor 1429–1465
        6. 6. Margaret Tudor 1437–1437
      2. 2. Edward Plantagenet 1382–1382
      3. 3. Thomas (of) Lancaster 1388–1421
      4. 4. John (of) Lancaster 1389–1435
      5. 5. Humphrey (Plantagenet of Lancaster, Duke of) Gloucester 1390–1447 m. Eleanor (de) Cobham 1405–1454 m. Jacobaea Straubing 1401–1436
        1. 1. Antigone Lancaster 1428–1450 m. Sir (Henry Grey, 2nd Earl of) Tankerville 1419–1450
      6. 6. Blanche (Lancaster branch of) Plantagenets 1392–1409 m. Louis (III Wittelsbach Dynasty, Elector Palatine, Count Palatine of the Rhine, member of the Parakeet Society and of the League of) Constance 1378–1436
      7. 7. Philippa (of Lancaster of Monmouth of) England 1394–1430
      8. 8. Joan Beaufort 1391–1451
      9. 9. Jane (Plantagenet (De) Beaufort) 1392–1461
    2. 2. Phillipa (Plantagenet of Lancaster, Queen of) Portugal 1360–1415 m. John (João I 'The Good' House de Aviz, King of Portugal & Algarve; Illegitimate son of Pedro) I 1357–1433
      1. 1. Isabella (de Avis, of Portugal, Duchess consort of) Burgundy 1397–1472 m. Philip (III "the Good" House of Valois, Duke of) Burgundy 1396–1467
        1. 1. Charles ("The Bold" Capet, Count of Charolais; Duke of) Burgundy 1433–1477 m. Isabella (De Bourbon, Countess; Consort of) Charolais 1436–1465 m. Margaret (Plantagenet of York, Duchess of) Burgundy 1446–1503 m. Catherine (of Valois, Countess of Charolais, no) issue 1428–1446
        2. 2. Jeanne (De) Glymes 1432–1518
      2. 2. Duarte (I ( Edward) 'The Eloquent' House of Aviz, King of) Portugal 1391–1438 m. Leonora ((Eleanor) House of Trastamara, Queen of Portugal &) Aragon 1402–1445
        1. 1. Eleonora (Helena Princess of Portugal, Holy Roman) Empress 1434–1467 m. Frederick (III 'The Peaceful' "The Fat" von Hapsburg, Holy Roman) Emperor 1415–1493
        2. 2. Joana (of Portugal, de Aviz, Queen Consort of) Castile 1439–1475
        3. 3. Alfonso (V 'The African', Joanine Dynasty (House of Aviz) King of Portugal and the) Algarves 1432–1481 m. Isabella (la) Paloma 1432–1455 m. Juana ("la Beltranaja" Infta of Castile, Princess of the) Asturias 1462–1530
        4. 4. Fernando (de Portugal, Duke of) Viseu 1433–1470 m. Beatriz (de) Aveiro 1430–1506
      3. 3. Pedro ((Peter), 1st Duke of Coimbra, Constable of) Portugal 1392–1449
      4. 4. Henrique ('Henry the Navigator' of Portugal, Duke of) Viseu 1394–1460
      5. 5. João ((John) de Portugal, Prince of the House of Aviz, Constable of Portugal & master of the Portuguese Order of St.) James 1400–1442 m. Isabel (of Portugal of Braganza, married her uncle) Joao 1402–1465
        1. 1. Beatriz (de) Aveiro 1430–1506 m. Fernando (de Portugal, Duke of) Viseu 1433–1470
    3. 3. Elizabeth Plantagenet 1363–1426 m. John (Hastings, 3rd Earl of) Pembroke 1372–1389 m. John (Holland, 1st Duke of Exeter, Earl of) Huntingdon 1352–1400
      1. 1. John (Holand Holland, 1st Duke of Exeter, Earl of Huntingdon; captured by the French at the Battle of Baugé 4 years as) prisoner 1395–1447 m. Brites (Beatrice of Portugal) (fitzAlan) 1386–1439 m. Lady (Anne de Stafford, Countess of March, Duchess of Huntington and) Exeter –1432
        1. 1. Anne Holand 1410–1486 m. James ((cousin) Douglas, 9th Earl of) Douglas 1426–1488 m. Sir (John Neville, knight, Lord of, War of the) Roses 1410–1461
      2. 2. Constance (de Holland) (Grey) 1387–1437 m. Sir (Thomas de) Mowbray 1385–1405
        1. 1. Reginald Grey –1485
      3. 3. Richard (Holland, 2nd Earl of) Huntingdon 1386–1400
      4. 4. Sir (Edward de) Holand 1399–1413
      5. 5. Elizabeth (de Holand) Holland 1389–1449 m. Sir (Roger de Fiennes, Knight of Shire for Sussex, Sheriff of Surrey & Sussex, Constable of Portchester, Treasurer of Household for King Henry) VI 1384–1449
        1. 1. Sir (Richard Fynnes) Fiennes 1415–1483 m. Lady (Joan de Dacre, 7th Baroness of Dacre, Baroness of Gilsland, Baroness of) Clifford 1418–1485
        2. 2. Margaret (de) Fiennes 1420–1483 m. Nicholas Carew 1405–1458 m. Henry (I) Scarborough 1423–1477

Isabel Lancaster's Timeline

2 Records

1315
1315
Birth of Isabel Beaumont House of Brienne, Duchess of Lancaster in Loughborough Castle, Loughborough, Leicestershire, England
Loughborough Castle, Loughborough, Leicestershire, England
1359
24 Mar 1359
Age 44
Death of Isabel Beaumont House of Brienne, Duchess of Lancaster in died of the plague, Leicester Castle, Leicestershire, England
died of the plague, Leicester Castle, Leicestershire, England

Sources

    Genealogy Event 1
    Event Type: Birth
    Event Date: 1315
    Event Place: Loughborough Castle, Loughborough, Leicestershire, England
    Record Source: Netherlands, GenealogieOnline Trees Index

    Genealogy Event 2
    Event Type: Death
    Event Date: 24 Mar 1359
    Event Place: died of the plague, Leicester Castle, Leicestershire, England
    Record Source:
    [1] Netherlands, GenealogieOnline Trees Index
    [2] Age:
    43-44
Find more search results for Isabel Lancaster

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