Letters addressed to John Sanderson, Lord Uxbridge's chief agent and (after c. 1835) to his successor, Thomas Beer, except where otherwise stated Letters addressed to John Sanderson, Lord Uxbridge's chief agent and (after c. 1835) to his successor, Thomas Beer, except where otherwise stated. The writers include: Thomas Williams of Llanidan to Lord Uxbridge, 1791 & 1798 (copper concerns, etc); William Cary, from Mona Lodge, to Lord Uxbridge, 1791, 794, 1797, 1798 (copper concerns, the Parys Mine leases, etc); Colin Jones, from Greenland Dock, Gravesend; Portsmouth, Falmouth and Llanfair, to Lord Uxbridge, 1791-1794 (Lord Uxbridge's yacht Druid, etc); John Parry, local agent, from Plas Newydd, 1793-1798 (household and estate matters); Samuel Grindley of Tregrnedd, 1793 (legal business); William Peacock of Fort Caesar, Llanedwen, 1792-1794; John Price, from Dublin and Mona Lodge, 1793-1798, and Pascoe Grenfelll from the Copper office, 1794, 1798 (copper concerns) 1791-1798