John Knyvett
John was born about 1425.¹   He died about 1490.¹ 

 Alice de Grey
Alice was born in 1415.¹   She died at the age of 59 on April 4th, 1474.¹ 

 Edmund Knyvett
Edmund was born in 1460.¹   He died at the age of 68 in 1528.¹