Robert de Grey
Robert was born before 1267 in Rotherfield, Sommerton, & Hardwick, Oxfordshire, England.  He died before May 27th, 1295.

 Joan de Valoines
Joan was born before 1275 in Shabbington, Buckinghamshire, England.  She died before November 12th, 1312.

 John de Grey
John was born in 1272.  He died at the age of 39 in 1311.

 Margaret de Grey
Margaret was born about 1272.

 Thomas de Grey
Thomas was born about 1272.