battle of Mount Badon
*Gildas, the chronicler of the decline of Roman Britain, attached great significance to this British victory, which he saw as giving 40 years of respite from the Saxon advance. The most likely sites are Badbury near Swindon, or Baydon near Lambourn. Gildas associated the victory with Ambrosius Aurelianus: Nennius in the early 9th cent. introduced the name of King Arthur and dated it 516.