Hugh Percy, 3rd Duke of Northumberland

Phillips's portrait of Hugh Percy, third Duke of Northumberland from 1803 depicts one of the wealthiest and most powerful noblemen in Britain—the head of the Percy family whose estates in Northumberland, whose Alnwick Castle, and whose parliamentary influence represented the concentrated power of the great landed aristocracy. The Percy family's ancient territorial dominion in the north of England had survived the Tudor and Stuart periods to remain one of the most significant aristocratic houses in Britain, and their portrait by a leading London painter served both personal commemoration and the assertion of continued dynastic prestige. The 1803 date places this during the period of the Second Coalition War, when Britain's ruling elite was managing both the Napoleonic threat and the pressures of internal reform.

The ducal portrait demands the highest level of formal presentation, with the sitter's aristocratic rank conveyed through costume, pose, and setting. Phillips meets these demands with professional polish. The Fitzwilliam Museum context places the portrait within one of Britain's finest university art collections.