Ambrosius Aurelianus as a war leader of the Romano-British who won an important battle in the 5th century, according to a 6th-century British monk best known for his scathing religious polemic which recounts the history of the Britons before and during what?
Gildas Gildas (Breton: "Gweltaz", c. 500–570) — also known as Gildas the Wise or Gildas Sapiens — was a 6th-century British monk best known for his scathing religious polemic "De Excidio et Conquestu Britanniae", 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 St. Gildas de Rhuys.
Agathonicus Saint Agathonicus was a 3rd-century citizen of Nicomedia. While living in Greece, he taught the Greeks about Christianity. Meanwhile, the imperial governor began persecuting Christians, following the orders of Emperor Maximian. In this persecution, Agathonicus' companion Zoticus was seized in Carpe, and his followers were crucified. He was sent to Nicomedia, where Agathonicus and his companions Princeps, Theoprepius, Acyndinus, Severian, Zeno, along with many others, were then taken to Byzantium. On this journey, many of the companions died from exhaustion and abuse, and the others were killed in Chalcedon. The survivors were taken to Thrace in Selymbria, where, after being tortured in front of the Greek Emperor, were beheaded.