Owned by Robert Walpole, the first Prime Minister of Great Britain (1721-1742), who was given the title Earl of Orford in 1742, which accounts for the change in the horse's name.

Sire [as Walpole Barb] of an unnamed mare which is grandam of Little Driver (prolific winner of "Fifties" - races worth £50 in value, 29 in total between 1748 to 1755);

sire [as Orford Turk] of Miss Romp (1742 King's Plates [mares] Newmarket, grandam of top class racehorse Turf, running between 1764 and 1767, including competitively against the exceptional racehorses Bay Malton and [King] Herod)