Rhydderch

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) (fl. 580; died c. 614)
 * Riderch II of Alt Clut (fl. early 9th century)
 * Rhydderch ap Dyfnwal (fl. 971)
 * Rhydderch ap Iestyn (died 1033)