Nielsen Hayden genealogy
Descendants of Elizabeth de Greystoke
Abt 1265 - Aft 1328 (~ 64 years)Father: Thomas de Greystoke
Elizabeth de Greystoke (Abt 1265 - Aft 1328)
Thomas de Pickering ( - Aft Jul 1336)
   └─ Robert de Pickering (Bef 1290 - Aft Nov 1351)
    Maud (m. Bef 4 Feb 1332)
       └─ James Pickering, Speaker of the House of Commons (Abt 1332 - 1398)
        Agnes
           └─ Joan de Pickering (Abt 1360 - Between 1 May 1426 and 12 Jun 1426) =>
            + William Gascoigne (1350 Gawthorpe, Yorkshire, England -
            6 Dec 1419 bur.Harewood, Yorkshire, England)(m. Aft 1396)
            6 Dec 1419 bur.Harewood, Yorkshire, England)(m. Aft 1396)