Althorp Papers. Vol. ccxxxiii. 1. Miscellanous correspondence and papers of William Poyntz; 1747-1760. 2. Marriage settlement of William Poyntz of Midgham, with related correspondence and papers; 1762-1770. Partly printed.
Althorp Papers. Vol. ccxxxiv. Notebook in the handwriting of William Poyntz of Midgham, containing a treatise concerning Roman and English law; [mid.-late 18th cent.?]. Partly Latin. Copy. ff. . 205 x 163 mm.
Althorp Papers. Vol. ccxxxv. 1. Correspondence of W.S. Poyntz with Sir Charles William Taylor, Bart., of Hollycombe, concerning estate matters and chiefly game rights; 1805-1822, n.d. Partly drafts. 2. Miscellaneous correspondence and papers of W.S. Poyntz and his wife; 1787-1839, n.d.
Althorp Papers. Vols. ccxxxvi-ccxli. Documents in the marriage settlement of W.S. Poyntz and Elizabeth Mary Browne, of which George John, 2nd Earl Spencer, was one of the trustees; 1738-1824. Five volumes.
Althorp Papers. Vols. ccxliii-ccxlvi. Correspondence and papers in the Exchequer suit, 1st Earl of Falmouth v. W. S. Poyntz, concerning a dispute over an exchange of property at Midgham arising from enclosure; 1767-1841. Partly printed. Four volumes.
Althorp Papers. Vol. ccxlvii. Brief, decree, etc., in the Chancery suit, Thomas Dicker and Mary Illidge v. W. S. Poyntz, concerning a debt owed by William Poyntz, father of W.S. Poyntz; 1810.
Althorp Papers. Vol. ccxlviii. 1. Journal by W.S. Poyntz of a tour in the Low Countries, Switzerland and Italy; 1817. 2. Commonplace material and medical recipes; late 18th-early 19th cent.