The property upon which Gray's Inn sits was once Portpoole Manor held by Reginald de Grey.

Reginald acquired Wilton barony through his marriage to the heiress, Matilda Cantilupe before 1252, although at the time he was a minor under the tutelage of his father, John de Grey.

From his father he had inherited the Manors of Brogborough, Thurleigh and Wrest in Bedfordshire; Great Brickhill, Snellson and Water Hall, Buckinghamshire; Hemingford, Yelling, Toseland in Huntingdonshire; Kempleigh, Gloucestershire; Purleigh, Essex; Rushton, Cheshire; Ruthin, Denbighshire; Shirland and Wilton, Herefordshire.

[1] In 1282, he was one of the three commanders appointed by Edward I of England in his campaign against Llywelyn ap Gruffudd, the rebellious Prince of Wales.

[5] Lord de Grey married Maud, daughter and heir of William FitzHugh, by Hawys, daughter and heir of Henry de Longchamp, of Wilton Castle, co. Hereford, by whom he inherited a large estate in the county.