Isabel de Roos

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ChartsAncestors of Harriet Hanson Robinson
Ancestors of Wilford Ervie Billings


Sir Marmaduke de Thweng, Knt., 1st Lord Thweng d. bef. 26 Feb 1322/23
  • Katherine de Thweng+2 d. bt 20 Apr 1364 - 28 May 1374
  • Margaret de Thweng+3
  • Lucy de Thweng+4
  • Marmaduke Thweng2 b. aft. 1273, d. 11 Sep 1297
  • William Thweng, 2nd Lord Thweng2 b. aft. 1273, d. bef. 19 Nov 1340
  • Robert Thweng, 3rd Lord Thweng2 b. aft. 1273, d. 22 Apr 1344
  • Thomas Thweng, 4th Lord Thweng2 b. aft. 1273, d. 28 May 1374
  • John Thweng2 b. aft. 1273
  • Nicholas Thweng2 b. aft. 1273
This person was last edited on22 Jul 2021


  1. [S1947] Douglas Richardson, Royal Ancestry: A Study in Colonial and Medieval Families (Five vols., Salt Lake City, Utah: s.p., 2013), 5:156 (Thweng 7.ii), further cited as Richardson, Royal Ancestry.
  2. [S1947] Richardson, Royal Ancestry, 5:155 (Thweng 7.ii).
  3. [S1947] Richardson, Royal Ancestry, 3:321 (Hotham 9).
  4. [S1947] Richardson, Royal Ancestry, 3:669 (Lumley 12), 5:155 (Thweng 7.ii).