Nielsen Hayden genealogy
Descendants of Constantine de Clifton
- Bef 1363Father: Adam de Clifton (1306 of Buckenham, Norfolk, England - Between 1366 and 1367)
Mother: Eleanor de Mortimer
Constantine de Clifton (of Buckenham Castle, Norfolk, England - Bef 20 Jan 1363)
Katherine de la Pole ( - Bef 17 Feb 1363)(m. Bef 20 May 1340)
   └─ John de Clifton (Abt 1353 of Buckenham, Norfolk, England - 10 Aug 1388 Rhodes)
    Elizabeth de Cromwell ( - 24 Sep 1391)
       └─ Constantine de Clifton (Abt 1372 of Buckenham, Norfolk, England - 19 Feb 1396)
        Margaret Howard ( - 25 Mar 1434 bur.Abbey of the Black Friars, Norwich, Norfolk, England)
        (m. Aft Feb 1390)
        (m. Aft Feb 1390)
            + John Knyvet (Abt 1394 of Southwick, Northamptonshire, England - 9 Nov 1445)(m. Bef 1412)