Stella Tillyard is one of Britain's best-selling historians, notably Aristocrats: Caroline, Emily, Louisa and Sarah Lennox 1740 - 1832 , winner of the History Today Prize and the Fawcett Prize, which became a BBC/WGBH series, A Royal Affair: George III and His Troublesome Siblings , Citizen Lord: Edward Fitzgerald, 1763-98 , which was shortlisted for the Whitbread prize, and a novel, Tides of War. She lives in London and Florence.