Biographical notes on Sir Robert Mansel and the Button family; notes on the bardic order, on Margam and on customs, notions, pastimes and diversions prevalent in Glamorgan; lists of manors, notes on abbeys and priories, and a list of bishops of Llandaff. The work is mainly that of William Davies, Cringell, but with additions by Richard Bevan and Edward Williams ('Iolo Morganwg').