John III De Mowbray
John III was born on June 25th, 1340.  He died at the age of 27 on June 17th, 1368.

 Elizabeth De Seagrave
Elizabeth was born on October 25th, 1338.  She died at the age of 30 in October 1368.

 Alianore De Mowbray
Alianore was born on March 25th, 1364.

 John De Mowbray
John was born in 1365.  He died at the age of 17 on February 10th, 1382.

 Thomas De Mowbray
Thomas was born on March 22nd, 1367.  He died at the age of 13 on September 22nd, 1380.

 Margaret De Mowbray
Margaret was born in 1393.

 Anne De Mowbray

 Joan De Mowbray
She died on November 30th, 1402.