Rhydderch or Riderch is a Welsh male given name being a compound of the elements "rhi" (ruler) and "derch" (exalted). Earliest mentions of the name are: *

Riderch I of Alt Clut Rhydderch Hael ( en, 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 ...

(Rhydderch Hael) ( fl. 580; died c. 614) *

Riderch II of Alt Clut Riderch II was, according to the Harleian genealogies, the son of Eugein II of Alt Clut, Eugein II, the son of King Dumnagual III of Alt Clut. He is known only from this source, and there is no direct evidence he was king of Kingdom of Strathclyde, ...

(fl. early 9th century) *

Rhydderch ap Dyfnwal Rhydderch ap Dyfnwal (fl. 971) was an eminent tenth-century Cumbrian who slew Cuilén, Cuilén mac Illuilb, King of Alba in 971. Rhydderch was possibly a son of Dyfnwal ab Owain, King of Strathclyde, and could have ruled as King of Strathclyde. R ...

(fl. 971) *

Rhydderch ap Iestyn Rhydderch ap Iestyn (died 1033) was king of Gwent and Morgannwg in south Wales and later took over the kingdom of Deheubarth and controlled Powys. Comparatively little has been recorded about Rhydderch ab Iestyn in the annals. He appears to have o ...

(died 1033)

See also