Robert de Clifford, 1st Lord Clifford
Robert was born on April 1st, 1274.  He died at the age of 40 on June 24th, 1314.

 Maud de Clare
Maud was born about 1276 in Gloucestershire, England.  She died about 1326.

 Robert de Clifford, 3rd Lord Clifford
Robert was born on November 5th, 1305.  He died at the age of 38 on May 20th, 1344.