Rhyddfedd Frych

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Rhyddfedd Frych, sometimes called Rhyddfedd ap Categern, may have been a late 5th-century Welsh ruler. At least one historian has suggested that he may have been the first member of the royal house of Powys to be styled as "Prince".^[1]

The name of his father, Categern, has led some scholars to identify him as the son of Cadeyern Fendigaid, and thus brother of Cadell Ddyrnllwg, King of Powys.^{[citation needed]}

Rhyddfedd was succeeded by his son, Cyngen Glodrydd.^[1]