Mortgages made by the successive owners of Brogyntyn on various parts of the estate, primarily in Caernarfonshire, Llangollen and Oswestry. The files relate to Rhedynogfelen and Gest, 1581, 1611, Braich y Ddinas, 1585, Kay 'r Pwll, 1586, lands in Llangollen, 1587-1588, Constable 's Hall, 1590-1611, Llanddyn and part of the Merionethshire estate, 1674-1675, Constable 's Hall, 1674-1681, lands in Middleton and Oswestry, 1677-1680, Ty Shion Lake?, 1682, Ynys Llanfihangel, 1682, messuages in Oswestry, 1684-1711, lands in Middleton, 1686-1717, Porkington, Clenennau and Llanddyn, 1687-1730, Ystumcegid, 1687-1734, Dolbenmaen and others, 1737, and Haughton and Carnbwl, 1827. Associated documents include counterparts and bonds.