Rhydderch Hael
Ruler of Alt Clut / From Wikipedia, the free encyclopedia
For the later king of Alt Clut named Rhydderch, see Riderch II of Alt Clut.
Rhydderch Hael (English: Rhydderch the Generous), Riderch I of Alt Clut, or Rhydderch of Strathclyde, (fl. 580 – c. 614) was a ruler of Alt Clut, a Brittonic kingdom in the Hen Ogledd or "Old North" of Britain. He was one of the most famous kings in the Hen Ogledd, and appears frequently in later medieval works in Welsh and Latin.[1][2][3][4]