John Mowbray Lord
He died in 1368.  He was buried in 1368.

 Elizabeth Segrave Baroness
Elizabeth was born on October 25th, 1338.

 Joan De Mowbray
Joan was born about 1363 in Axholme, Lincolnshire, England.  She died after November 30th, 1402 in England.  She was buried after November 30th, 1402 in England.

 Thomas Mowbray Of Norfolk I Duke
Thomas Mowbray was born on March 22nd, 1365.  He died at the age of 34 in 1399.  He was buried in 1399.