Robert I De Clifford
Robert I was born in 1274.  He died at the age of 40 on June 24th, 1314.

 Maud De Clare
Maud was born in 1279.  She died at the age of 47 on February 1st, 1326.

 Roger De Clifford
Roger was born on January 21st, 1299.  He died at the age of 23 on March 23rd, 1322.

 Margaret De Clifford
Margaret was born in 1302.  She died at the age of 80 on August 8th, 1382.

 Iodena De Clifford
Iodena was born in 1303.  She died at the age of 62 on August 24th, 1365.

 Robert De Clifford Of Westmorland
Robert was born in 1305.  He died at the age of 39 on May 20th, 1344.

 Isabel De Clifford