John (3rd Lord) De Mowbray
John (3rd Lord) was born on November 29th, 1310 in Hovingham, Yorkshire, England.¹   He died at the age of 50 on October 4th, 1361 in Bedford, Bedfordshire, , England.¹ 

 + Joan Plantagenet
+ Joan was born in 1310 in , Norfolk, , England.²   She died at the age of 39 on July 7th, 1349 in High Alter, Byland.² 

 John (4th Lord) De Mowbray
John (4th Lord) was born on June 25th, 1340 in Epworth, Lincolnshire, , England.²   He died at the age of 28 on October 9th, 1368 in Istanbul, Istanbul, Turkey.²