The collection consists of personal and family papers, 1774-1845; account books, rent books and financial papers, 1809-1847, of members of the Roberts family; papers, 1800-1848, relating to parochial and church matters in the parish of Llanrwst; correspondence, 1819-1852, addressed to Thomas Griffith Roberts concerning financial matters; receipts, 1818-1851, in relation to the payment of various taxes; receipts, bills and vouchers, 1817-1852, for various domestic accounts; and miscellanea, 1791-1885.