JOHN ST JOHN
JOHN was born in 1307.¹   He died at the age of 42 on April 8th, 1349.¹ 

 KATHERINE de SAYE
KATHERINE was born about 1310.¹ 

 ELIZABETH ST JOHN
ELIZABETH was born in 1331.¹   She died at the age of 80 in 1411.¹