Nielsen Hayden genealogy
Descendants of Richard de Rothwell
Richard de Rothwell
   └─ Joan de Rothwell
    John de Morteyn (of Merston, Bedfordshire, England - 1346)
       ├─ Lucy de Morteyn ( - Aft 8 Mar 1361)
       │ John Giffard (1301 of Twyford, Buckinghamshire, England - 25 Jan 1369)
       │    └─ Thomas Giffard (Abt 1345 of Twyford, Buckinghamshire, England - 25 Sep 1394) =>
       │     + Elizabeth de Missenden ( - Abt 1367)(m. Abt 1361)
       └─ Joan Morteyn ( - Bef 1324)
        John Chamberlain (Between 1290 and 1291 of Gatesden, Hertfordshire, England - ??)(m. Bef 1314)
           └─ Richard Chamberlain (of Coates in Titchmarsh, Northamptonshire, England -
            Between 14 Sep 1391 and 2 Nov 1391) =>
            Between 14 Sep 1391 and 2 Nov 1391) =>
            + Joan ( - 20 Sep 1409)