Includes papers re the feoffees, c.1600 - 1895; papers re the administration of school and almshouse, 1662 - 1876; papers re estates and properties on Anglesey, 1530 - 1921; papers re the County Governing Body, 1876 - 1921; and miscellaneous papers; [c.17 cent] - 1951.
Records of particular interest in this collection include: petitions for apprenticeships and exhibitions, 1790 Aug. 24 - 1864; apprenticeship indentures, 1793 Oct. 7 - 1865 Apr. 8; list of scholars, [1784] - 1868; and miscellaneous farms on Anglesey and Caernarvonshire, 1771 - [1928 Feb. 3]. These farms include:
Bodfeddan, Ceirchiog, Anglesey, [c.1785] - 1900; Bodhala, Cerrig Ceinwen, Anglesey, 1819 - 1928; Bodhenlli, Cerrig Ceinwen, Anglesey, [late 1700s] - 1880; Bryn Llwyd, Cerrig Ceinwen, Anglesey, 1874 - 1880; Canol Rhos, Cerrig Ceinwen, Anglesey, 1874 - 1880; Cott (or Bodneuadd), Llanfflewin, Anglesey, 1824 - 1880; Graiglwyd, Cerrig Ceinwen, Anglesey, 1874 - 1880;Maenhir, Llantrisant, Anglesey, 1771 - 1880; Penterfryn, Cerrig Ceinwen, Anglesey, 1874 - 1880; Plas Bach, Cerrig Ceinwen, Anglesey, 1774 - 1880; Prysiorwerth, Cerrig Ceinwen, Anglesey, 1810 - 1901; Rhos Isaf, Cerrig Ceinwen, Anglesey, 1874 - 1880; Rhostrehwfa, Cerrig Ceinwen, Anglesey, [early 1800s] - 1826; Rhos Uchaf, Cerrig Ceinwen, Anglesey, 1874 - 1880; Tremoelgoch, Llanddeusant, Anglesey, 1833 - 1880; Ty Coch, Llangristiolus, Anglesey, 1863 - 1880; Ty Llwyd, Cerrig Ceinwen, Anglesey, 1874 - 1880; Ty Moel, Ceirchiog, Anglesey, 1818 - 1876; Tyddyn Gyrfer, Llechgynfarwy, Anglesey, 1789 - 1880; Ysgubor Fawr, Aberffraw, Anglesey, 1774 - 1880; Dyffryn Mymbyr, Llandegai, Caernarvonshire, 1783 - 1873.