The dazzlingly beautiful identical twins Mamaine and Celia Paget were born in 1916 and brought up in rural Suffolk – not the greatest springboard, you would think, for lives at the intellectual heart of the mid-20th century. Yet the list of their friends reads like a roll call of literary notables: Dick Wyndham, Peter Quennell, Cyril Connolly, Bertrand Russell, Sacheverell Sitwell and Laurie Lee.