When Henrietta Howard (née Hobart) built her Thames-side country house in Twickenham in the 1720s, it represented so much more than a fashionable escape from the bustle of court life: it was a refuge from her abusive marriage, and a sign of hard-won independence. With the house and its grounds now restored to their Georgian glory, and the site reopening to the public, Carly Hilts visited to find out more.