Note 529 — Chapter V · THE DANISH CONQUEST OF ENGLAND.[464] 975–1016.
Reading edition
His own dominions are described (Brut, 991) as Dyfed, Ceredigion, Gower, and Cydweli, answering to the modern counties of Pembroke, Cardigan, Caermarthen, and part of Glamorgan. In 985 he conquered Mona or Anglesey, Merioneth, and Gwynedd generally.