Notes collected from calendars of public records and from printed sources relating to the Marches of Wales and to the de Clare Earls of Gloucester, with transcripts in other hands of charters and other documents relating to William de Breos, Hugh le Despenser, Richard de Clare, Gilbert de Clare and others; notes from an extent of Caerphilly, 24 Edward I, and from an inspeximus, 14 Elizabeth, of a record of knight's fees held by the Earl of March.