Nielsen Hayden genealogy
Descendants of Beatrice de Cotesford
Beatrice de Cotesford
Robert de Strickland (of Great Strickland, Westmorland, England - Aft 1220)
   └─ Robert de Strickland (of Great Strickland, Westmorland, England - 1278)
   
       └─ William de Strickland ( - 1306)
        Elizabeth d'Eyncourt ( - Between 1272 and 1274)(m. Jun 1239)
           ├─ Walter de Strickland (of Sizergh, Westmorland, England - Abt 1342) =>
           │ + Eleanor de Goldington (m. Between 1295 and 1296)
           └─ Joan de Strickland ( - Aft 1323)
            + Robert de Washington (of Carnforth in Wharton, Lancashire, England - 1324)(m. 1292)