Roger (1st Earl of March) de Mortimer
Roger (1st Earl of March) was born on April 25th, 1287.  He died at the age of 43 on November 29th, 1330.

 Joan ( Baroness Grenville) de Grenville
Joan ( Baroness Grenville) was born about 1287.  She died after 1311.

 Maud de Mortimer
Maud was born in 1307.  She died after August 1345.