John De Grey
John was born in 1160 in Cornwell, Oxfordshire, England.¹   He died at the age of 32 in 1192 in Standlake, Witney, Oxfordshire, England.¹ 

 Robert De Grey
Robert was born in 1180 in Rotherfield, Oxfordshire, England.¹   He died at the age of 65 in 1245 in Rotherfield Greys, Henley On Thames, Oxfordshire, England.¹ 

 John De Grey
John was born in 1200.¹