The Britons were in the possession of Oswestry till the latter part of the eighth century, when the warlike King Offa, passing the Severn with a mighty force, expelled them from their fruitful seats on the plains, and reduced the kingdom of Powis to the western side of the celebrated ditch still known by his name. The princes of Powis were then constrained to quit their ancient residence at Pengwern and remove to Mathrafel, in the vale of Myfod, and the plains of Shropshire became a confirmed part of the kingdom of Mercia. The Britons shortly after entered into an alliance with the king of Sussex and Northumberland, and, having made a breach in the rampart, passed the boundary at early dawn, attacked the camp of Offa in an unprepared state, and put great numbers to the sword. In the middle of the following century, we find Roderic, Prince of Wales, added Powisland to his dominions. He, according to the custom of gavel-kind, divided his principality among his children. To Anarawd he gave North Wales; to Cadell, South Wales; to Mervyn, Powisland. Each wore a talaith, or diamond of gold, set with precious stones; whence they were styled Y Tri Tywysog Taleithiog, or the three crowned princes. Bleddyn ap Cynoyn, who ruled Wales jointly with his brother, at the Conquest re-united the kingdoms of North Wales and Powis. The latter, however, eventually devolved to his eldest son, Meredydd, and Oswestry was called Trefred, in honour of this prince. He made the division, which finally destroyed the potent kingdom of Powis. To his eldest son, Madog, he gave the part which bore afterwards the name of Powis Madog. Madog’s chief residence was at Oswestry, where, according to Welsh historians, he built the castle about the year 1140. He died at Winchester, and his body was honourably conveyed to Powis, and buried at Myfod. His widow married Fitzalan, Lord of Clun; who, in right of his wife, obtained the town and castle of Oswestry. This William was a descendant of Alan, who came into England with the Conqueror, and was the first of the Fitzalans that was baron of Oswestry. This honourable distinction was possessed by the Fitzalans, a powerful race, that existed with fewer checks than common to dignity for more than five hundred years. The title of Baron of “Oswaldestre” is now held by the Duke of Norfolk. His ancestor, Thomas Duke of Norfolk, married Lady Mary, daughter of Henry, the last Earl of Arundel, of the name of Fitzalan, in the 13th of Elizabeth, when the lordship of Oswestry was conveyed to the duke. The Powis family subsequently became possessed of the manor. Powisland extended from the Broxton hills, in Cheshire, to Pengwerne Powis, or Shrewsbury, including a large tract of land in both those counties, and also comprehended a considerable portion of Wales. This part of England, previous to the reign of Edward II., was termed the Northern Marches, and was governed by a Lord President, who kept his