Nielsen Hayden genealogy
Descendants of Isabel de Clare
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Father: Gilbert de Clare
(Abt 1180 - 25 Oct 1230 Penrose, Brittany, France)
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Mother: Isabel Marshal
(9 Oct 1200 Pembroke, Pembrokeshire, Wales - 17 Jan 1240 Berkhamsted, Hertfordshire, England)
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Isabel de Clare (2 Nov 1226 - Aft 10 Jul 1264)
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31 Mar 1295 Lochmaben Castle, Dumfriesshire, Scotland)(m. May 1240)
   │
John fitz Marmaduke
(of Horden, Durham, England -
   │ Bef 16 Aug 1311 bur.Durham Cathedral, Durham, Durham, England)
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   │ Bef 16 Aug 1311 bur.Durham Cathedral, Durham, Durham, England)
   │    
Robert de Lumley
(Abt 1272 of Lumley in Little Lumley, Durham, England - Bef 13 Jul 1308)
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   │        └─ Robert de Lumley
(of Lumley in Little Lumley, Durham, England - Bef 20 Jul 1325) =>
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   │         + Lucy de Thweng
(Abt 1290 Kilton Castle, Cleveland, Yorkshire, England - Bef 1325)
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       │
Hugh Ross
( - 19 Jul 1333 Halidon Hill, Northumberland, England)(m. 1308)
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       │    │ + Malise of Strathearn
( - Between 7 Jun 1344 and 11 Nov 1357)(m. Between 1325 and 1328)
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       │    └─ William de Ross
( - 9 Feb 1372 Delny, Ross-shire, Scotland) =>
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       └─ Robert de Brus, King of Scotland
(11 Jul 1274 Scotland -
        7 Jun 1329 Cardross, Dumbartonshire, Scotland)
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        7 Jun 1329 Cardross, Dumbartonshire, Scotland)
        :   └─ Marjory Bruce
( - Oct 1317 bur.Paisley, Renfrewshire, Scotland) =>
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        :    + Walter Stewart
(Abt 1297 - 9 Apr 1327 Bathgate, West Lothian, Scotland)(m. Aft 25 Apr 1315)
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Elizabeth de Burgh
( - 26 Oct 1327 Cullen, Moray, Scotland)(m. 1302)
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           ├─ Matilda de Brus
( - 20 Jul 1353 Aberdeen, Scotland) =>
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           └─ David II, King of Scotland
(5 Mar 1324 Dunfermline Abbey, Fife, Scotland -
            22 Feb 1371 Edinburgh Castle, Edinburgh, Midlothian, Scotland)
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            22 Feb 1371 Edinburgh Castle, Edinburgh, Midlothian, Scotland)
            + Joan, Queen Consort of Scotland
(5 Jul 1321 Tower of London, London, England - 7 Sep 1362
            : bur.Church of the Grey Friars, London, England)(m. 17 Jul 1328 Berwick, Northumberland, England)
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            : bur.Church of the Grey Friars, London, England)(m. 17 Jul 1328 Berwick, Northumberland, England)
            + Margaret Drummond
( - Aft 31 Jan 1375)(m. Bef Feb 1364)
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