This appears to be the only surviving portion of a draft of the "Description of Caernarvonshire , ( 1809 - 1811 )" which is preserved in this library (BMSS/908 ) and which was edited by the present librarian for publication by the Caernarvonshire Historical Society in 1952
N.L.W. 839 was formerly in the possession of Edmund Humphrey Owen of Ty Coch, Caernarvon.{ See "A Description of Caernarvonshire 1809-1811, p.viii}