Nielsen Hayden genealogy
Descendants of Isabel de Beaumont
- Aft 1361Father: Henry de Beaumont ( - 10 Mar 1340)
Mother: Alice Comyn ( - Bef 10 Aug 1349)
Isabel de Beaumont ( - Aft 24 Mar 1361)
Henry of Grosmont (1314 - 24 Mar 1361 Leicester, Leicestershire, England)(m. Abt 1337)
   └─ Blanche of Lancaster (25 Mar 1342 - 12 Sep 1368 bur.St. Paul's Cathedral, London, England)
    John of Gaunt (Mar 1340 Abbey of St. Bavo, Ghent, Flanders - 3 Feb 1399 Leicester Castle, Leicester,
    Leicestershire, England)(m. May 1359 Reading Abbey, Berkshire, England)
    Leicestershire, England)(m. May 1359 Reading Abbey, Berkshire, England)
       ├─ Philippa of Lancaster (31 Mar 1360 Leicester, Leicestershire, England -
       │ 19 Jul 1415 Odivelas, near Lisbon, Portugal)
       │ 19 Jul 1415 Odivelas, near Lisbon, Portugal)
       │ + Joao I, King of Portugal (Lisbon, Portugal;11 Apr 1358 - 14 Aug 1433)(m. 11 Nov 1387 Porto, Portugal)
       ├─ Elizabeth of Lancaster (Bef 21 Feb 1363 - ??)
       │ John Holand ( - 9 Jan 1400 Pleshey Castle, Essex, England)(m. 24 Jun 1386 Plymouth, Devon, England)
       │    └─ Constance Holand ( - 12 Nov 1437 bur.St. Katherine by the Tower, London, England) =>
       │     + John Grey (of Ruthin, Denbighshire, Wales - 27 Aug 1429)(m. Bef 1410)
       └─ Henry IV, King of England (1367 Bolingbroke Castle, Lincolnshire, England - 20 Mar 1413 Jerusalem
        Chamber in the abbot's house near Westminster Abbey, Westminster, Middlesex, England)
        Chamber in the abbot's house near Westminster Abbey, Westminster, Middlesex, England)
        Mary de Bohun ( - 1394)(m. 5 Feb 1381 Rochford Hall, Essex, England)
           ├─ Henry V, King of England and lord of Ireland (16 Sep 1386 Monmouth Castle, Monmouthshire, Wales -
           │ 31 Aug 1422 Château-de-Vincennes, Vincennes, Île-de-France, France) =>
           │ 31 Aug 1422 Château-de-Vincennes, Vincennes, Île-de-France, France) =>
           │ + Catherine of Valois, Queen Consort of England (27 Oct 1401 Hotel de St. Pol, Paris, France - 3 Jan
           │ 1437 Bermondsey Priory, Surrey, England)(m. 2 Jul 1420 Troyes, Aube, Champagne-Ardenne, France)
           │ 1437 Bermondsey Priory, Surrey, England)(m. 2 Jul 1420 Troyes, Aube, Champagne-Ardenne, France)
           └─ Thomas of Lancaster (1387 - 22 Mar 1421 Baugé, Anjou, France)
            + Margaret Holand ( - 31 Dec 1439 Bermondsey, Surrey, England)