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


  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).
This person was last edited on26 Jul 2019