John Cokayne
John was born about 1415 in Ashborn, Derbyshire, England.  He died about 1505.

 Agnes Vernon
Agnes was born about 1424 in Haddon Hall, Derbyshire, England.

 Thomas Cokayne
Thomas was born about 1451 in AshBrown, Derbyshire, England.  He died in 1488 in Polsworth, Warwickshire, England.