Cefn Llan Manuscripts Casgliad bach o bapurau yn perthyn i deulu'r Hughesiaid o Gefn Llan a Chefn Llan Uchaf, fferm ym mhlwyf Llanddeiniolen, Sir Gaernarfon. Ceir casgliad diddorol o lythyrau gan David Hughes i'w frawd William a oedd yn ffermio Cefn Llan; cyfrifon fferm a derbynebau; llyfr trethi'r priffyrdd a llyfr yn perthyn i longwr, 1781-1785. A small collection of 8 items relating to the Hughes family of Cefn Llan and Cefn Llan Uchaf, a farm in the parish of Llanddeiniolen, Caernarfonshire. The collection includes a group of interesting letters from David Hughes to his brother William who farmed Cefn Llan, written between 1834 and 1870; farm and miscellaneous accounts and receipts, 1839-1887; a highway rate book for the parish of Llanfair-is-gaer, 1859-1861; and account books relating to the shipment of slates and other goods from Bangor and Portdinorwic for the period 1781-1785. 1781-1914