Althorp Papers. Vols. ccxxxvi, ccxxxvii. Abstract of the title of W.S. Poyntz and his wife and their trustees to estates in Sussex; circa 1794. Draft and copy, [1819?]. Two volumes.
Althorp Papers. Vol. ccxxxviii. Abstract of title of W.S. Poyntz and his wife to the manor and rectory of Croydon; circa 1793. Two copies, one imperfect.
Althorp Papers. Vol. ccliii. 1. Papers relating to the sale of Saddlescomb and Clayton Farms; 1824, 1825. Partly printed. 2. Papers relating to the division of the personal estate amongst the three daughters of W.S. Poyntz; 1842-1845. 3. Papers relating to the sale of Cowdray; 1842, 1843, n.d.
Althorp Papers. Vol. ccxlix. 1. Bonds of W.S Poyntz; 1798-1815. 2. Monthly abstracts of his account with Drummond's bank; 1839, 1840. 3. Will and post mortem reports; 1838, 1840. Partly abstracts.