John I De Mowbray
John I was born on September 4th, 1286.  He died at the age of 34 on March 23rd, 1321.

 Alice De Braose
Alice was born in 1280.  She died at the age of 51 on July 30th, 1331.

 Christianna De Mowbray
Christianna was born in 1305.  She died at the age of 57 on December 25th, 1362.

 John II De Mowbray
John II was born on November 29th, 1310.  He died at the age of 50 on October 4th, 1361.