Humphrey De Stafford
Humphrey was born about 1424.¹   He died after November 2nd, 1483.¹ 

 Margaret Beaufort
She died in 1474.¹ 

 Duke of Buckingham de Stafford Henry
Duke of Buckingham de Stafford was born on September 4th, 1455.¹   He died at the age of 28 on November 2nd, 1483 in executed.¹