Brogyntyn Castle is a ruin of a native Welsh castle found close to Selattyn, Shropshire, England, on the Anglo-Welsh border. It is thought the castle was built, or at least owned, by Owain Brogyntyn, a 12th Century prince of the kingdom of Powys. Very little of the castle now remains.[1]
The antiquarian resource book Earthwork of England, prehistoric, Roman, Saxon, Danish, Norman and medieval (1908) states:
"Brogyntyn Castle, near Oswestry, is a perfectly round moated site, the external diameter 290 feet, the internal 160 feet, and the fosse having a width of 65 feet."
Castle Brogyntyn formerly belonged to Owain Brogyntyn, the natural son of Prince Madog ab Meredydd.[2]