Additional papers of the North family, 1573-1916, consisting of:
- Estate papers, 1707-1845, relating to estates in Northamptonshire, Warwickshire, Gloucestershire, Oxfordshire, Essex, London, and Lincolnshire.
- Household and personal papers, 1680-1892, including Wroxton household accounts, 1746-1828; personal papers, 1680-1751; bills and receipted bills of Susan North, Dowager Countess of Guilford, 1815-34; and papers of Colonel John Sidney North, formerly Doyle, 1836-1892.
- Estate papers of families connected to the Norths by marriage, including a bond given to John Kay of Woodsome, Yorkshire, West Riding, relating to property in Highburton, Yorkshire, 1573; and accounts of the Pope family, Earls of Downe, 1629-77
- Miscellaneous papers, 1618-1916, including medical papers of Dr Edward Sergeant of St. Thomas's Hospital, London, and Bolton Infirmary, ca. 1861-91; and copies, ca. 1700, of deeds of the Atterbury family of Milton Malsor, Northamptonshire