[Routh's, Portmore's, Vernon's, Cumberland's] gr c 1744 (Old Crab - Sister to Slipby, by Fox). Sire Line Alcock's Arabian. Family 1. Bred by Mr Routh, he was sold to Lord Portmore in 1749. After the King's Plate at Newmarket in April of 1751 he was sold to Captain Richard Vernon, who in turn sold him to the Duke of Cumberland. Raced by the Duke after 1751, he retired to the Duke's stud and eventually became known as the Duke of Cumberland's Crab. A half-share in his dam, Sister to Slipby, was given by Lord Portmore to Mr Routh in 1741 [Early Records:59]. He sired the Duke of Cumberland's Milksop (bl c 1760) and his unnamed sister (gr f 1761) [GSB 1:130].