Four works by the great Italian artist Guercino. This gem of a catalog accompanies an exhibition at Waddesdon Manor on one of the great painters of seventeenth-century Italy, Giovanni Francesco Barbieri, known as Guercino (1591-1666). It brings together for the first time Waddesdon's King David with three paintings of sibyls (female prophets from classical antiquity) on loan from the National Gallery and the Royal Collection...