John De Mohun
John was born in 1235 in Dunster, Somersetshire, England.

 Joan De Ferrers
Joan was born in 1242 in Groby, Derbyshire, England.

 John De Mohun
John was born in 1276 in Dunster, Somersetshire, England.  He died at the age of 54 on August 30th, 1330.