Illumination of a 15th-century manuscript of <a href="https://en.wikipedia.org/wiki/Historia_Regum_Britanniae" class="extiw" title="w:Historia Regum Britanniae">Historia Regum Britanniae</a> showing king of the Britons <a href="https://en.wikipedia.org/wiki/Vortigern" class="extiw" title="w:Vortigern">Vortigern</a> and Ambros watching the fight between two dragons.
Unknown author<span style="display: none;">Unknown author</span>
15th-century manuscript of Historia Regum Britanniae: Lambeth Palace Library MS 6. <a rel="nofollow" class="external text" href="http://www.vortigernstudies.org.uk/artlit/image3.htm">Vortigern studies</a>