Sub-Roman writers

Saint Patrick was a fifth-century Romano-British Christian missionary and bishop in Ireland. Known as the "Apostle of Ireland", he is the primary patron saint of Ireland, the other patron saints being Brigid of Kildare and Columba. He is also the patron saint of Nigeria. Patrick is venerated as a saint in the Catholic Church, the Church of Ireland, Lutheranism, and in the Eastern Orthodox Church, where he is regarded as equal-to-the-apostles and Enlightener of Ireland.

Gildas (English pronunciation: , Breton: Gweltaz; ) – also known as , (in Middle Welsh texts and antiquarian works) and (Gildas the Wise) – was a 6th-century British monk best known for his religious polemic , which recounts the history of the Britons before and during the coming of the Saxons. He is one of the best-documented figures of the Christian church in the British Isles during the sub-Roman period, and was renowned for his Biblical knowledge and literary style. In his later life, he emigrated to Brittany, where he founded a monastery known as Saint-Gildas-de-Rhuys.

Aneirin (), also rendered as Aneurin or Neirin and Aneurin Gwawdrydd, was an early Medieval Brythonic war poet who lived during the 6th century. He is believed to have been a bard or court poet in one of the Cumbric kingdoms of the Old North, probably that of Gododdin at Edinburgh, in modern Scotland. From the 17th century, he was usually known as Aneurin.

legendary Northern British poet