Pedigrees and genealogical material relating to Anglesey and Caernarvonshire families; papers relating to Parliamentary elections, the wreck of the Rothesay Castle, 1831, the Bodvel estates, David Hughes and the Beaumaris Free Grammar School, William Rowlands, vicar of Conway, 1705-1706, etc.; particulars of Beaumaris crown rents, 1657-1754; a survey of Bulkeley property in Beaumaris [? 1572-1573], with a rough plan of the town based upon it by John Williams, 1860; depositions concerning pews at Tudweiliog church; Anglesey lay subsidy rolls, 1594 and 1625; an Anglesey muster roll, c. 1600; A Memorial to the Lord Treasurer against Lord Bulkeley, 1709; letters of Richard Prythergh, 1635, and M. Wright, Brynddu, relating to her daughter's education, 1763; plans of Anglesey properties; a diagram showing the contents of Madryn cellar, 1758; particulars of sale of the Kinmel and Dinorbenfawr estate, 1786.