Papers of Sir William Williams, mainly legal papers, 1685-1693; political papers, 1680-1698; and papers relating to, or collected by his ancestors or descendants, 1567-1812. The legal papers include papers relating to the trials of the Earl of Shaftesbury, 1677, Algernon Sidney, 1683, his own trials for a scandalum magnatum brought by James II and the Earl of Peterborough, 1685-1686, and the trial of the Seven Bishops, 1688.