Mên Scryfa, Madron, Penwith, Cornwall - October 30, 1992
Mên Scryfa (or Mên Scrifa, literally "stone with writing") is an inscribed standing stone in Cornwall, United Kingdom (grid reference SW427353). The inscription, dating to the early medieval period, commemorates "Rialobranus son of Cunovalus."
The inscription, in debased Roman capitals, reads "Rialobrani Cunovali fili", which translates as "Rialobranus son of Cunovalus." Rialobran is not known elsewhere, but he may have been a Cornish petty king or tribal leader. Rialobran (or Ryalvran) may be Cornish for "royal raven", whereas Cunovallos may be British for "famous leader", thus the inscription would read "royal raven son of famous leader. Antiquarians, at one time, used to identify Cunovalus with the pre-Roman British king Cunobeline.