A Life Dedicated to Royal Portraiture John Shackleton, a name perhaps less celebrated than some of his contemporaries, nonetheless occupies a significant position in the annals of 18th-century British portraiture. Born into obscurity – the details of his parentage and early life remaining frustratingly unknown – Shackleton rose to become Principal Painter in Ordinary to both George II and George III, a testament to his skill and the esteem in which he was held by the royal court. His career unfolded during a period of burgeoning artistic consciousness in Britain, as the nation sought to esta…