Keywords: Henry Percy, 9th Earl of Northumberland by John Samuel Agar, published by Lackington, Hughes, Harding, Mavor & Jones, and published by Longman, Hurst, Rees, Orme & Brown, after Robert William Satchwell, after Sir Anthony van Dyck.jpg Stipple engraving of Henry Percy 9th Earl of Northumberland by John Samuel Agar published by Lackington Hughes Harding Mavor Jones and published by Longman Hurst Rees Orme Brown after Robert William Satchwell after Sir Anthony van Dyck http //www npg org uk/collections/search/portraitLarge/mw128626/Henry-Percy-9th-Earl-of-Northumberland LinkID mp00041 role art displayNo 60 rNo 32 published 25 September 1820 Creator John Samuel Agar after Robert William Satchwell after PD-old-100 Henry Percy 9th Earl of Northumberland John Samuel Agar Works after Anthony van Dyck 1820 engravings 1820 portraits 19th-century portraits from the United Kingdom 19th-century portraits in the United Kingdom 19th-century engraved portraits of men Engravings from the United Kingdom Stipple engravings |