John (4th Lord) De Mowbray
John (4th Lord) was born on June 25th, 1340 in Epworth, Lincolnshire, , England.¹   He died at the age of 28 on October 9th, 1368 in Istanbul, Istanbul, Turkey.¹ 

 + Elizabeth De Segrave
+ Elizabeth was born on October 25th, 1338 in Croxton, Leicestershire, , England.²   She died about 1368.² 

 + Alianor De Mowbray
+ Alianor was born on March 25th, 1364 in Isle, Lincolnshire, England.³   She died at the age of 35 in 1399 in Isle, Lincolnshire, England.³