This is a bibliography of works about King Arthur, his family, his friends or his enemies. This bibliography includes works that are notable or are by notable authors. 6th century De Excidio et Conquestu Britanniae by Gildas, mentions the Battle of Mons Badonicus, but famously neglects to mention Arthur 9th century Historia Brittonum attributed to Nennius 10th century Latin Annales Cambriae, anonymous Welsh Preiddeu Annwfn attributed to Taliesin "Pa Gur yv y Porthaur " or "Who is the gatekeeper?", anonymous ( a dialogue between Arthur and a gatekeeper, in which he boasts about Cei Sir Kay's battle with the Cath Palug ) Englynion y Beddau or Stanzas of the graves, anonymous (Arthur's grave site is a mystery) 11th century Latin The Legend of St. Goeznovius, anonymous c. 1019 (Saxon resurgence when Arthur is "recalled from the actions of the world" may be reference to his immortality. Vortigern mentioned) Vita Sancti Cadoc by Lifris of Llancarfan c. 1086 (Arthur wants to ravish Gwladys whom Gundliauc elopes with, but aids them by Kay and Bedivere's counsel. St. Cadoc harbors a killer of Arthur's men and pays cattle as recompense, but they transform into bundles of ferns.) Welsh Trioedd Ynys Prydein (Triads of the Isle of Britain) 11th–14th century. (Twelve triads referring to Arthur. Others mention (Mabon) and Drystan (Tristan), etc.) Trioedd y meirch (The Triads of the Horses) (Mentions the horse names of Cei (Sir Kay), Gwalchmai's horse Ceincaled.) Tri Thlws ar Ddeg Ynys Prydain (Thirteen Treasures of the Island of Britain) 15th–16th centuries Pedwar marchog ar hugain llys (Twenty-four Knights of Arthur's Court) 15th–16th centuries Mentions the sword Caledfwlch and the spear Rhongomiant 12th century Welsh Culhwch and Olwen, anonymous, c. 1100 Latin Vita Sancti Carannog c. 1100 (At Arthur's requests, Carantoc tames a dragon. Cato (=Kay) is depicted as feeding it.) Vita Sancti Euflami c. 1100 (Arthur cannot defeat dragon, but Efflam causes it to plunge from a rock through prayer) Vita Sancti Paternus c. 1120s (Mentions Arthur and Caradoc) Gesta Regum Anglorum by William of Malmesbury 1125 (Arthur wears image of Mary; Discovery of Gawain's tomb.) Historia Anglorum by Henry of Huntingdon 1129 (Mentions Arthur) Vita Santi Gildae by Caradoc of Llancarfan c. 1120–1130 (early version of Malegant-Guenivere abduction narrative.) Works of Geoffrey of Monmouth Historia Regum Britanniae c. 1136–8 Vita Merlini c. 1150 -The above stories are the main source of information for those writing on the legend.