Rhygyfarch
Rhygyfarch or Rhigyfarch, eldest son of Sulien, whom he may have succeeded in 1091 as Bishop of [St David's], was the author of the earliest surviving and standard Life of Saint David. The original text was written in Latin but was translated into Welsh later in the Middle Ages as Buchedd Dewi. The translation did much to enhance the cult status of Saint David in Wales and was in itself an important landmark in Welsh literature">Welsh language">Welsh literature. He also wrote Latin poems, including one dealing with the different versions of the Psalter, and another called "Planctus Ricemarch", bemoaning the state of those parts of Norman [invasion of Wales|south Wales under Norman occupation].