Nielsen Hayden genealogy
Descendants of Iorwerth Drwyndwn ap Owain Gwynedd
- Abt 1174Father: Owain Gwynedd, King of Gwynedd ( - 1169 bur.Bangor Cathedral, Bangor, Gwynedd, Wales)
Mother: Gwladus ferch Llywarch
Iorwerth Drwyndwn ap Owain Gwynedd ( - Abt 1174)
   └─ Llywelyn Fawr ap Iorwerth (Abt 1173 - 11 Apr 1240 Aberconwy Abbey, Conwy, Wales)
    (One of the several mistresses of Llywelyn ap Iorwerth)
    :   ├─ Margaret ferch Llywelyn ( - 1265)
    :   │ John de Brewes (Abt 1197 of Gower, Swansea, Wales - Between 1231 and 1232)(m. 1219)
    :   │ :   ├─ William de Brewes (Abt 1224 of Bramber, Sussex, England - 6 Jan 1291 Findon, Sussex, England) =>
    :   │ :   │ + Agnes de Moels ( - Bef 1271)
    :   │ :   │ + Aline de Multon ( - Bef 1268)(m. Bef 1253)
    :   │ :   │ + Mary de Ros ( - Bef 23 May 1326)(m. Bef 1272)
    :   │ :   └─ Richard de Brewes (Bef 1232 of Stinton in Salle and Heydon, Norfolk, England -
    :   │ :    Bef 18 Jun 1292 bur.Woodbridge Priory, Suffolk, England) =>
    :   │ :    Bef 18 Jun 1292 bur.Woodbridge Priory, Suffolk, England) =>
    :   │ :    + Alice le Rus (Abt 1247 - Bef 28 Jan 1301 bur.Woodbridge Priory, Suffolk, England)
    :   │ :    (m. Bef 9 Sep 1265)
    :   │ :    (m. Bef 9 Sep 1265)
    :   │ Walter IV de Clifford (of Clifford, Herefordshire, England - Bef 23 Dec 1263)(m. Bef 2 Nov 1234)
    :   │    └─ Maud de Clifford (of Clifford, Herefordshire, England - Between 1282 and 1285) =>
    :   │     + William LongespĂ©e (of Amesbury, Wiltshire, England - Between 23 Dec 1256 and 3 Jan 1257)
    :   │     + John Giffard (Abt 1232 of Brimpsfield, Cirencester, Gloucestershire, England -
    :   │     28 May 1299 bur.Malmesbury Abbey, Wiltshire, England)(m. Bef 10 Mar 1271)
    :   │     28 May 1299 bur.Malmesbury Abbey, Wiltshire, England)(m. Bef 10 Mar 1271)
    :   ├─ Ellen ( - Aft Feb 1294)
    :   │ Donald of Mar ( - Aft 25 Jul 1297)
    :   │    │ + Robert de Brus, King of Scotland (11 Jul 1274 Scotland -
    :   │    │ 7 Jun 1329 Cardross, Dumbartonshire, Scotland)(m. Abt 1295)
    :   │    │ 7 Jun 1329 Cardross, Dumbartonshire, Scotland)(m. Abt 1295)
    :   │     +
    :   └─ Tegwared y Baiswen ap Llywelyn ab Iorwerth Drwyndwn ab Owain Gwybnedd (Abt 1200 - ??)
    :    Gwenllian ferch Ednyfed Fychan
    :       └─ Angharad ferch Tegwared y Baiswen ap Llywelyn ab Iorwerth Drwyndwn ab Owain Gwybnedd =>
    :        + Gruffudd ap Hywel ap Maredudd ab Einion (Abt 1270 - ??)
    Tangwystl
    :   └─ Grufudd ap Llywelyn ab Iorwerth Drwyndwn ab Owain Gwybnedd ( - 1 Mar 1244 Tower of London, London,
    :    England)
    :    England)
    :    Senena ferch Caradog
    :       └─ Dafydd III ap Gruffudd ap Llywelyn ab Iorwerth, Prince of North Wales ( - 3 Oct 1283 Shrewsbury,
    :        Shropshire, England) =>
    :        Shropshire, England) =>
    :        + (Unknown mistress of Dafydd III)
    Joan of England (Bef 1190 - 30 Mar 1236 bur.Llanvaes, Anglesey, Wales)(m. Bef 23 Mar 1205)
    :   ├─ Gwladus Ddu ( - 1251 Windsor, Berkshire, England)
    :   │ + Reynold de Briouze (of Abergavenny, Monmouthshire, Wales - Between 1227 and 1228)(m. 1215)
    :   │ Ralph de Mortimer (of Wigmore, Herefordshire, England -
    :   │ 6 Aug 1246 bur.Wigmore Abbey, Herefordshire, England)(m. Bef 26 Oct 1230)
    :   │ 6 Aug 1246 bur.Wigmore Abbey, Herefordshire, England)(m. Bef 26 Oct 1230)
    :   │    └─ Roger de Mortimer (of Wigmore, Herefordshire, England -
    :   │     27 Oct 1282 Kingsland, Herefordshire, England) =>
    :   │     27 Oct 1282 Kingsland, Herefordshire, England) =>
    :   │     + Maud de Briouze ( - 16 Mar 1301)(m. Bef 1248)
    :   └─ Ellen of Wales ( - Bef 24 Oct 1253)
    :    Robert de Quincy (Bef 1200 of Wakes Colne, Essex, England - Aug 1257)(m. Bef 5 Dec 1237)
    :       ├─ Joan de Quincy ( - 25 Nov 1283)
    :       │ + Humphrey de Bohun (of Havering, Essex, England - 27 Oct 1265 Beeston Castle, Cheshire, England)
    :        + Baldwin Wake (Abt 1238 of Liddell, Cumberland, England - 5 Feb 1282)(m. Bef 5 Feb 1268)
    + Eve Fitzwarine ( - Aft 1281)(m. 1239)