Nielsen Hayden genealogy
Family: Marmaduke de Thweng / Isabel de Ros (F2441)
m. 1273-
Male
Marmaduke de Thweng
Birth of Kilton in Brotton, Yorkshire, England Death Bef 26 Feb 1323 Burial Marriage 1273 [1, 2] Father Marmaduke de Thweng | F3716 Group Sheet Mother Lucy de Brus | F3716 Group Sheet
Female
Isabel de Ros
Birth of Ingmanthorpe in Kirk Deighton, Yorkshire, England Death 1309 Burial Father William de Ros | F1374 Group Sheet Mother Eustache fitz Ralph | F1374 Group Sheet
Female
+ Katherine de Thweng
Birth Death Between 20 Apr 1364 and 28 May 1374 Burial Spouse Ralph Daubeney | F23514 Marriage Bef 8 Feb 1346
Female
+ Lucy de Thweng
Birth Abt 1290 Kilton Castle, Cleveland, Yorkshire, England Death Bef 1325 Burial Spouse Robert de Lumley | F5495 Marriage
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Sources - [S789] The Wallop Family and Their Ancestry by Vernon James Watney. Oxford, 1928.
- [S128] The Complete Peerage of England, Scotland, Ireland, Great Britain and the United Kingdom, Extant, Extinct or Dormant ed. Vicary Gibbs, H. A. Doubleday, Duncan Warrand, Howard de Walden, Geoffrey H. White and R. S. Lea. 2nd edition. 14 volumes (1-13, but volume 12 spanned two books), London, The St. Catherine Press, 1910-1959. Volume 14, "Addenda & Corrigenda," ed. Peter W. Hammond, Gloucestershire, Sutton Publishing, 1998.
- [S789] The Wallop Family and Their Ancestry by Vernon James Watney. Oxford, 1928.