A group of sixteen letter books of Charles Watkin Williams Wynn, 1807-1813, 1825-1831, containing carbon copies of private and professional letters, the correspondents including his brothers Watkin Williams Wynn and Henry Watkin Williams Wynn, Robert Southey, Edward Herbert, 1st earl of Powis, Arthur Wellesley, 1st duke of Wellington, William Wyndham Grenville, baron Grenville, Sir Charles Grey, Lord Chief Justice of Bengal, Reginald Heber, bishop of Calcutta, and Daniel Corrie, bishop of Madras. Among the subjects of Welsh interest discussed are the parliamentary elections for Montgomeryshire and Flint, 1807, and the Montgomeryshire Local Militia.