The title Baron Percy has been created several times in the Peerage of England. The first, in 1066, became extinct in 1299. The second, in 1299, became extinct in 1517. The third, in 1557, became extinct in 1670. The present creation was in 1722, by writ of summons.
Barons Percy, 1722 creation
Algernon Seymour, 1st Baron Percy, 7th Duke of Somerset (1684_1750)
Percy's active military career ended with his return from the colonies in 1777, but he continued to serve in largely ceremonial positions: he obtained the colonelcy of the second troop of Horse Grenadier Guards (1784) and of the premier regiment, the Horse Guards in 1806; he became a full general in the army in 1793.
Percy, displaying the irascibility for which he would be famous in later life, was furious that Howe should listen to a mere major before a general and heir to a dukedom.
Percy's own copy of Sauthier's chorographical map of New York, published in London by William Faden in 1779, was among the maps sold at the Percy auction in May 1997 (see the description of the provenance of the "Percy Map").