YourRoots by Genomelink
banner

Sign up to explore more

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

John of Gaunt Plantagenet Duke of Lancaster, Duke of Aquitaine, Earl of Richmond, King of Castile and Leon 1340–1398 – Genealogical Records

Birth Date: 6 Mar 1340

Birth Location: Abbaye de St Bav, Ghent, Flandre Oriental, Belgium

Death Date: 15 Mar 1398

Death Location: London, City of London, Greater London, England

Father: Edward England

Mother: Philippa Hainault

Spouse(s): Katherine Lancaster, Blanche Lancaster, Infanta Leon

Children(s): Joan Westmorland, Henry Winchester, John Somerset, Thomas Beaufort, Isabel Plantagenet, Henry England, Philippa Plantagenet, Catherine Gaunt

In 1340, John of Gaunt Plantagenet Duke of Lancaster, Duke of Aquitaine, Earl of Richmond, King of Castile and Leon entered the world in Abbaye de St Bav, Ghent, Flandre Oriental, Belgium, born to Edward Iii Plantgenet King Of England And Philippa D Avesnes Of Hainault. John of Gaunt Plantagenet Duke of Lancaster, Duke of Aquitaine, Earl of Richmond, King of Castile and Leon married Blanche Fitz Henry Grosmont Plantagenet Of Lancaster Duchess Of Lancaster, Infanta Constance Pedra Castile Y Leon, Katherine De Roet Lady Swynford Duchess Of Lancaster, and had children including Catherine Gaunt, Henry Beaufort Dean Bishop Of Winchester, Henry Iv King Of England, Isabel Plantagenet, Joan Beaufort Countess Of Westmorland, John Beaufort Earl Of Somerset, Philippa Lancaster Plantagenet, Thomas De Beaufort. John of Gaunt Plantagenet Duke of Lancaster, Duke of Aquitaine, Earl of Richmond, King of Castile and Leon passed away in 1398 in London, City of London, Greater London, England.

Find more search results for John Leon
JL

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 1340, John of Gaunt Plantagenet Duke of Lancaster, Duke of Aquitaine, Earl of Richmond, King of Castile and Leon entered the world in Abbaye de St Bav, Ghent, Flandre Oriental, Belgium, born to Edward Iii Plantgenet King Of England And Philippa D Avesnes Of Hainault.
  • John of Gaunt Plantagenet Duke of Lancaster, Duke of Aquitaine, Earl of Richmond, King of Castile and Leon married Blanche Fitz Henry Grosmont Plantagenet Of Lancaster Duchess Of Lancaster, Infanta Constance Pedra Castile Y Leon, Katherine De Roet Lady Swynford Duchess Of Lancaster, and had children including Catherine Gaunt, Henry Beaufort Dean Bishop Of Winchester, Henry Iv King Of England, Isabel Plantagenet, Joan Beaufort Countess Of Westmorland, John Beaufort Earl Of Somerset, Philippa Lancaster Plantagenet, Thomas De Beaufort.
  • John of Gaunt Plantagenet Duke of Lancaster, Duke of Aquitaine, Earl of Richmond, King of Castile and Leon passed away in 1398 in London, City of London, Greater London, England.

Immediate Family

Parents

Spouses(s)

Children(s)

John Leon's Ancestors

Self
John Leon
1340–1398
Birth Place: Abbaye de St Bav, Ghent, Flandre Oriental, Belgium
Parents
Edward III Plantgenet King of England
1312–1377
Windsor, Windsor and Maidenhead Royal Borough, Berkshire, England
Philippa (d'Avesnes of) Hainault
1311–1369
Valenciennes, Departement du Nord, Nord-Pas-de-Calais, France
Grandparents
King (Edward II) Plantagenet
1284–1327
Caernarvon, Caernarvonshire, Wales
Princess (Isabella De) France
1292–1358
Paris, Paris, Ile-de-France, France
Count (of Hainaut Guillaume) III
1286–1337
Avesnes, Pas-de-Calais, Nord-Pas-de-Calais, France
Jeanne (de) Valois
1294–1342
Longpont, Aisne, Picardie, Kingdom of France
Great-Grandparents
Charles Valois
1270–1325
Marguerite d'Anjou
1273–1299
2nd-Great-Grandparents

John Leon's Descendants

1.
JL
John (of Gaunt Plantagenet Duke of Lancaster, Duke of Aquitaine, Earl of Richmond, King of Castile and) Leon (6 Mar 1340–15 Mar 1398) m. Katherine (de Roet, Lady Swynford; Duchess of) Lancaster (25 Nov 1350–10 May 1403) m. Blanche (fitz Henry Grosmont Plantagenet of Lancaster Duchess of) Lancaster (25 March 1345–30 Sep 1369) m. Infanta (Constance Pedra Castile y) Leon (1354–24 Mar 1394)
  1. 1. Joan (Beaufort Countess of) Westmorland 1379–1440
  2. 2. Henry (Beaufort Dean; Bishop of) Winchester 1374–1447
  3. 3. John (Beaufort Earl of) Somerset 1371–1410 m. Margaret (of Kent Holland Duchess Of Clarence, Countess of Somerset, Marchioness of) Dorset 1385–1439 m. Margaret (de) Holand 1385–1439
    1. 1. John (Beaufort 1st Duke of) Somerset 1403–1444
    2. 2. Thomas (Beaufort Count of) Perche 1405–1431
    3. 3. Henry (Beaufort 2nd Earl of) Somerset 1401–1418
    4. 4. Sir (Edmund BEAUFORT 2nd Duke of) Somerset 1406–1455 m. Eleanor Beauchamp 1406–
    5. 5. Joan (Beaufort Queen of) Scots 1404–1445 m. James (Stewart King of Scotland) I 1394–1436 m. James (I Scotland) Stewart 1394–1437 m. James (Black Knight Lorn) Stewart 1383–1451 m. Ralph (De) NEVILLE 1364–1425
      1. 1. Annabella Stewart 1435–1509
      2. 2. Isabella (Stewart Princess of) Scotland 1426–1498
      3. 3. Joan Stewart 1428–1486 m. Sir (James Ninth Earl) Douglas 1426–1491
      4. 4. Mary Stewart 1429–1465
      5. 5. Margaret Stewart 1424–1445
      6. 6. Andrew STEWART 1437–1501
      7. 7. Eleanor Stewart 1433–1480
      8. 8. Andrew Stewart 1428–1428
      9. 9. Andrew (Stewart Dean; Bishop of) Moray 1442–1501
      10. 10. Sir (John Atholl) Stewart 1440–1512 m. Lady (Eleanor Sinclair Countess of) Atholl 1457–1519 m. Margaret Douglas 1430–1475
        1. 1. Marjorie (Stewart** Baroness) Campbell 1469–1524 m. Colin (Richard 3rd Laird of Glenorchy) Campbell 1480–1523
        2. 2. Marjory Stewart 1490–1524 m. Colin (Richard 3rd Laird of Glenorchy) Campbell 1480–1523
        3. 3. Christian (Stewart) Sinclair 1476–1538
        4. 4. Lady (Catherine) Stewart 1473–1538
        5. 5. Elizabeth Stewart 1465–1529
        6. 6. Margaret Stewart 1466–
        7. 7. Katherine STEWART 1461–1510
        8. 8. Isabel Stewart 1460–1516
        9. 9. Lady (Anne) Stewart 1475–
        10. 10. Andrew Stewart 1485–1542
        11. 11. John (2nd Earl of Atholl) Stewart 1478–1521 m. Mary (Jane "Janet" Campbell ( Lady) Argyll) 1486–1546
        12. 12. Elspeth (Elizabeth) Stewart 1494–1564
        13. 13. Agnes Stewart 1494–1590
        14. 14. Joanna Stewart 1450–1510
        15. 15. Elizabeth Gordon 1499–1529
        16. 16. Jean STEWART 1481–1550
        17. 17. Jean (Atholl) Stewart 1479–1522
        18. 18. Anne (Atholl) Stewart 1499–1529
        19. 19. Lady (Agnes) Stewart 1495–1557
        20. 20. Anne Stewart 1492–1564
        21. 21. Lady (Margaret Stewart Atholl Countess) Castletown 1476–1543
        22. 22. Elspeth Stewart 1492–1516
        23. 23. Catherine STEWART 1473–1515
        24. 24. Isabel Stewart 1460–1516
        25. 25. Elizabeth STEWART 1465–1529
        26. 26. Jean Stewart 1468–1510
      11. 11. Alexander Stewart 1430–1430
      12. 12. Jean Stewart 1430–1486
      13. 13. Princess Johanna 1431–1488
      14. 14. Isabella (Elizabeth) SCOTLAND 1426–1494
      15. 15. James (II) Stewart 1430–1460 m. Mary (of Guelders Queen Consort of) Scotland 1433–1463 m. Mary Gueldres 1463–1463 m. Marie (Queen of) Scotland 1430– m. Margaret Murray 1446–1486 m. Margaret Ogilvy 1430– m. Mary (of Guelders Queen of) Scotland 1434–
        1. 1. Alexander, (1st Duke of Albany,) Stewart 1454–1485 m. Catherine (Sinclair Duchess) Albany 1453–1486 m. Anne (DeLaTour D) Auvergne 1465–1512 m. Cecilia Plantagenet 1469–1507 m. Catherine Sinclair 1450–1470
        2. 2. David (Earl Moray) Stewart 1456–1457
        3. 3. James Stewart 1460–1513
        4. 4. Agnes (Isabel) Stewart 1475–1556
        5. 5. Thomas Cash 1460–1540
        6. 6. John (Earl of) MAR 1455–1485
        7. 7. Agnes Stewart 1495–1557
        8. 8. David (Stewart) Stuart 1457–1487
        9. 9. John (Stewart Earl) Mar 1457–1479
        10. 10. Agnes Stewart 1455–1556
        11. 11. Margaret (Elizabeth Lennox) Stewart 1424–1445
        12. 12. John (Of) SCOTLAND 1458–1479
        13. 13. Mary STEWART 1457–1488
        14. 14. Mary (Stuart Princess of) Scotland 1450–1465
        15. 15. Margaret Stewart 1449–1500
        16. 16. John ((1st Earl of Mar & Garioch)) STEWART 1459–1479
        17. 17. James (Stewart King of Scots) III 1445–1488 m. Margaret (Queen of Scotland Tudor) I 1456–1486
        18. 18. Cecilia Stewart 1459–
        19. 19. Eleanor Stewart 1427–1480
        20. 20. Richard Stewart 1452–
        21. 21. Marguerite (of) Denmark 1451–1488
        22. 22. Edward Stewart 1442–1483
        23. 23. Mary Stewart 1430–1484
        24. 24. Margaret (Elizabeth of Lennox) Stewart 1456–1512
      16. 16. Isobel (Elizabeth) Stewart 1433–1494
      17. 17. Mary (Princessof) Scotland 1429–1465
      18. 18. James ("Hearty James" 1st Earl of Buchan) Stewart 1442–1488 m. Margaret Ogilvey 1442–
      19. 19. Joan (Scotland) Stewart 1278–1337
      20. 20. James Stewart 1416–1498
      21. 21. Joan Douglas 1428–1486
    6. 6. Margaret (Courtenay Countess Devon) Beaufort 1407–1482
    7. 7. Somerset (Edmund) DeBeaufort 1390–1427
    8. 8. Margaret (Beaufort Countess of) Devon 1409–1449
    9. 9. Thomasine Beaufort 1409–1469
    10. 10. Thomas (Beaufort Earl of) Perche 1405–1431
  4. 4. Thomas (De) Beaufort 1377–1426
  5. 5. Isabel Plantagenet 1368–1368
  6. 6. Henry (IV King of) England 1367–1413
  7. 7. Philippa (Lancaster) Plantagenet 1359–1451
  8. 8. Catherine Gaunt 1372–1410

John Leon's Timeline

3 Records

1340
6 Mar 1340
Birth of John of Gaunt Plantagenet Duke of Lancaster, Duke of Aquitaine, Earl of Richmond, King of Castile and Leon in Abbaye de St Bav, Ghent, Flandre Oriental, Belgium
Abbaye de St Bav, Ghent, Flandre Oriental, Belgium
1398
15 Mar 1398
Age 58
Burial of John of Gaunt Plantagenet Duke of Lancaster, Duke of Aquitaine, Earl of Richmond, King of Castile and Leon in London, City of London, Greater London, England
London, City of London, Greater London, England
1399
3 Feb 1399
Age 59
Death of John of Gaunt Plantagenet Duke of Lancaster, Duke of Aquitaine, Earl of Richmond, King of Castile and Leon in Castle Leicester, Leicestershire, England
Castle Leicester, Leicestershire, England

Sources

    Genealogy Event 1
    Event Type: Birth
    Event Date: 6 Mar 1340
    Event Place: Abbaye de St Bav, Ghent, Flandre Oriental, Belgium
    Record Source:
    [1] UK and Ireland, Find a Grave Index
    [2] International, Find a Grave Index
    [3] Dictionary of National Biography, Volumes 1-20, 22
    [4] Dictionary of National Biography, Volumes 1-20, 22
    [5] Dictionary of National Biography, Volumes 1-20, 22
    [6] Dictionary of National Biography, Volumes 1-20, 22
    [7] Dictionary of National Biography, Volumes 1-20, 22
    [8] Millennium File
    [9] Colonial Families of the USA

    Genealogy Event 2
    Event Type: Death
    Event Date: 3 Feb 1399
    Event Place: Castle Leicester, Leicestershire, England
    Record Source:
    [1] UK and Ireland, Find a Grave Index
    [2] International, Find a Grave Index
    [3] Dictionary of National Biography, Volumes 1-20, 22
    [4] Dictionary of National Biography, Volumes 1-20, 22
    [5] Dictionary of National Biography, Volumes 1-20, 22
    [6] Dictionary of National Biography, Volumes 1-20, 22
    [7] Dictionary of National Biography, Volumes 1-20, 22
    [8] Millennium File
    [9] Colonial Families of the USA

    Genealogy Event 3
    Event Type: Burial
    Event Date: 15 Mar 1398
    Event Place: London, City of London, Greater London, England
    Record Source:
    [1] UK and Ireland, Find a Grave Index
    [2] International, Find a Grave Index
    [3] 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