John V de Mowbray
John V was born in 1392.  He died at the age of 40 on October 19th, 1432 in Epworth.  He was buried in Epworth Priory.¹ 

 Catherine de Neville
Catherine was born in Raby, Durham, England.  She died after 1483.

 John VI de Mowbray
John VI was born on May 12th, 1415.  He died at the age of 46 on November 6th, 1461.  He was buried in Thetford, Norfolk, England.