Robert de Ferrers
Robert was born in 1242 in Derby, Lincolnshire, England.  He died at the age of 37 in 1279.

 Alianore (Agnes) de Bohun
Alianore (Agnes) was born about 1245 in Brecknock, Brecon, Wales.

 Sir John de Ferrers
Sir John was born on June 20th, 1271 in Cardiff, Wales.  He died at the age of 41 in August 1312 in Gascony, France.

 Alianore de Ferrers
Alianore was born about 1273.