Nielsen Hayden genealogy
Descendants of Avicia
Avicia
( - ?? bur.Chollerton, Northumberland, England)
John de Swinburne ( - 1313 bur.Chollerton, Northumberland, England)
   └─ Adam de Swinburne ( - 1318)
    Margaret
       └─ Elizabeth de Swinburne ( - Bef 1326)
        Roger Heron (of Ford, Glendale, Northumberland, England - Bef 15 Mar 1333)
           └─ William Heron (of Ford, Glendale, Northumberland, England - 21 Dec 1379) =>
            + Isabel Gray (of Heaton, Wark-on-Tweed, Northumberland, England - Aft 1362)