History of the ownership reflects the fundamental social forces that have shaped England over the last 1000 years.  In the beginning the estate was under the gift of the Crown.  All land in England belonged to the Crown and the great estates were given to William's allies from Normandy and then subsequently to powerful men that the King needed on his side.  
The village derives its name from the next recorded owner of the manor - Sir John de Grey, second Lord Grey of Wilton and Governor of Caernavon.  Sir John de Grey was born in 1265, son of Sir Reynold de Grey and Maud de Longchamps.  On his death in 1324, the official enquiry reports that he owned "the manor of Estone Grey".  It is not recorded when the estate passed from the Berkeley family to the de Greys - perhaps in 1290 when the title of Lord Wilton was created. On John de Grey's death we do know hat  the manor contained "a capital messuage with one garden worth yearly 6s/8d.  A dovecote worth 3s/4d. 200 acres of arable land, 3 1/2 acres of meadow worth 1s/8d per acre.  6 acres of pastures worth 3s an acre and with other rents brought in an income of £5.0s.2d.


The de Grey family held Easton Grey until 1441 when it became attached to Shipton Moigne following the marriage of Katherine Stourton to a member of the de Grey family.  It appears that Lord Stouron sold Easton Grey in 1543 although others claimed that the lands were forfeited to the Crown in the reign of Henry VIII and granted to John Adye in 1541.  Two other significant families owned Easton Grey for the next 300 years the Parry's and the Hodges bringing once again Shipton Moyne and Easton Grey under one family's ownership in 1757.  The Shipton Moyne part of the estate was sold to Thomas Estcourt in 1793.