Nielsen Hayden genealogy
Family: Constantine de Clifton / Margaret Howard (F11810)
m. Aft Feb 1390-
Father | Male
Constantine de Clifton
Born Abt 1372 of Buckenham, Norfolk, England 
Died 19 Feb 1396 Buried Married Aft Feb 1390 [1] Father John de Clifton | F11812 Group Sheet Mother Elizabeth de Cromwell | F11812 Group Sheet
Mother | Female
Margaret Howard
Born Died 25 Mar 1434 Buried Abbey of the Black Friars, Norwich, Norfolk, England Father Robert Howard | F11818 Group Sheet Mother Margaret de Scales | F11818 Group Sheet
Child 1 | Female
+ Elizabeth Clifton
Born Abt 1392 Died Bef 8 Dec 1461 Buried Spouse John Knyvet | F11326 Married Bef 1412
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