* Gildas Sapiens, a designation for Saint Gildas ( c. 500 – 570 ), a 6th-century British cleric

Gildas ( c. 500 – 570 ) was a 6th-century British cleric.

The 6th-century historian Gildas wrote De Excidio et Conquestu Britanniae () in the first decades of the sixth century.

In 1525 Vergil published an edition of Gildas ' 6th-century history, De Excidio et Conquestu Britanniae, probably at Antwerp.

Gildas mentions Constantine in chapters 28 and 29 of his 6th-century work De Excidio et Conquestu Britanniae.

Geoffrey's account of the episode is based on Constantine's murder of two " royal youths " as mentioned by the 6th-century writer Gildas.

The appeal is first referenced in Gildas ' 6th-century De Excidio et Conquestu Britanniae ; Gildas ' account was later repeated in Bede's Historia ecclesiastica gentis Anglorum.

There is no specific account of this event in the 6th-century writings of Gildas.

This essay is a polemic against corruption and Gildas provides little in the way of names and dates.

Vortiporius, " tyrant of the Demetae ", is one of the kings condemned by Gildas in his 6th century polemic De Excidio et Conquestu Britanniae.

That Gildas ' mention of the appeal is a minor part of a much larger religious polemic however, means that the image described may be more hyperbolic than realistic, especially as his sources were probably derived from oral tradition.

He also appears in Gildas ' 6th century polemic De Excidio et Conquestu Britanniae and Bede's Historia Ecclesiastica gentis Anglorum.

Ambrosius Aurelianus is one of the few people that Gildas identifies by name in his sermon De Excidio et Conquestu Britanniae, and the only one named from the 5th century.

Gildas, in his 6th century De Excidio et Conquestu Britanniae, may have been alluding to Boudica when he wrote " A treacherous lioness butchered the governors who had been left to give fuller voice and strength to the endeavours of Roman rule.

The peace following the battle of Mons Badonicus is attested partly by Gildas, a monk, who wrote De Excidio et Conquestu Britanniae or On the Ruin and Conquest of Britain during the middle of the sixth century.

In the De Excidio et Conquestu Britanniae written c. 540, Gildas says that Maximus left Britain not only with all of its Roman troops, but also with all of its armed bands, governors, and the flower of its youth, never to return.

* Gildas De Excidio et Conquestu Britanniae II. 13-14

The earliest source to describe the Battle of Mons Badonicus is De Excidio et Conquestu Britanniae ( On the Ruin and Conquest of Britain ), written by the monk Gildas in the mid 6th century.

* Gildas, De Excidio Brittaniae, ed.

Gildas ' principal work, De Excidio et Conquestu Britanniae, is a sermon in three parts condemning the acts of his contemporaries, both secular and religious.

The only contemporary information about the person is provided by Gildas, who includes Maelgwn among the five British kings who he condemns in allegorical terms in his De Excidio et Conquestu Britanniae.

In his De Excidio et Conquestu Britanniae (), written c. 540, Gildas makes an allegorical condemnation of 5 British kings by likening them to the beasts of the Christian Apocalypse as expressed in the biblical Book of Revelation, 13-2: the lion, leopard, bear, and dragon, with the dragon supreme among them .< ref >* — " And the beast which I saw was like unto a < u > leopard </ u >, and his feet were as the feet of a < u > bear </ u >, and his mouth as the mouth of a < u > lion </ u >: and the < u > dragon </ u > gave him his power, and his seat, and great authority.

In his condemnation of 5 British kings in the De Excidio et Conquestu Britanniae, Gildas refers to wine as " sodomitical " but never applies that word to any person.

Some experts say that this was not the first compiled history of the Britons and that it was largely based on Gildas ' De Excidio et Conquestu Britanniae written some two centuries before.

St Gildas, the Welsh author of the De excidio Britonum, is also credited with the Lorica, or Breastplate, an apotropaic charm against evil that is written in a curiously learned vocabulary ; this too probably relates to an education in the Irish styles of Latin.

Chroniclers such as Bede, with his Historia ecclesiastica gentis Anglorum, and Gildas, with his De Excidio et Conquestu Britanniae, were figures in the development of indigenous Latin literature, mostly ecclesiastical, in the centuries following the withdrawal of the Roman Empire.

He is attributed in some old stories as hosting the first Eisteddfod and he is one of five Celtic British kings castigated for their sins by the contemporary Christian writer Gildas ( who referred to him as Maglocunus, meaning ' Prince-Hound ' in Brittonic ) in De Excidio et Conquestu Britanniae.

"... you the last I write of but the first and greatest in evil, more than many in ability but also in malice, more generous in giving but also more liberal in sin, strong in war but stronger to destroy your soul ...." Gildas Sapiens, De Excidio et Conquestu Britanniae

* Britannicarum Gentium Historiæ Antiquæ Scriptores tres: Ricardus Corinensis, Gildas Badonicus, Nennius Banchorensi ( 1757 ) – his notable work, a publication of the works of Gildas, Nennius, and the purported author of De Situ Britanniæ, Richard of Cirencester.

In desperation the Britons send letters to the general of the Roman forces, asking for help, but receive no reply ( this passage borrows heavily from the corresponding section in Gildas ' De Excidio Britanniae ).

Life of Saint Gildas, written in the early 12th century by Caradoc of Llancarfan ; of Saint Cadoc, written around 1100 or a little before by Lifris of Llancarfan ; medieval biographies of Carannog, Padarn and Eufflam, probably written around the 12th century ; a less obviously legendary account of Arthur appears in the Legenda Sancti Goeznovii, which is often claimed to date from the early 11th century ; William of Malmesbury's De Gestis Regum Anglorum and Herman's De Miraculis Sanctae Mariae Laudensis, which together provide the first certain evidence for a belief that Arthur was not actually dead and would at some point return.

The works of Gildas Sapiens, including the Excidio, can be found in volume 69 of the Patrologia Latina.

Geoffrey of Monmouth includes Constantine in a section of his Historia Regum Britanniae adapted from Gildas, in which the reproved kings are made successors, rather than contemporaries as in De Excidio.

Gildas discusses Aurelius Conanus in Chapter 30 of his work De Excidio et Conquestu Britanniae, in a section in which he reproves five kings for their various sins.

The only contemporary information about the person comes from Gildas, in a highly allegorical condemnation from his De Excidio et Conquestu Britanniae ().

Gildas writes ad annum obsessionis Badonici montis ... quique quadragesimus quartus ut novi orditur annus mense iam uno emenso qui et meae nativitatis estwhich has been translated in more than one way.

In his De Excidio et Conquestu Britanniae (), written c. 540, Gildas makes an allegorical condemnation of 5 British kings by likening them to the beasts of the Christian Apocalypse as expressed in the biblical Book of Revelation, 13-2: the lion, leopard, bear, and dragon .< ref >* — " And the beast which I saw was like unto a < u > leopard </ u >, and his feet were as the feet of a < u > bear </ u >, and his mouth as the mouth of a < u > lion </ u >: and the < u > dragon </ u > gave him his power, and his seat, and great authority.

One of the battles, the battle of Mons Badonicus, appears to be that great British victory mentioned by Gildas in his De Excidio et Conquestu Britanniae ( On the Ruin and Conquest of Britain ).

A message dated to c. 446, known as the Groans of the Britons, is recorded by Gildas in his De Excidio et Conquestu Britanniae and later by Bede.

There is little evidence to show whether or not Durnovaria survived into the post-Roman era: Gildas ' record of a tradition, given in De Excidio et Conquestu Britanniae iii, of twenty-eight cities and sundry castles of former happy times was not provided with any names.

Ambrosius Aurelianus, ; called Aurelius Ambrosius in the Historia Regum Britanniae and elsewhere, was a war leader of the Romano-British who won an important battle against the Anglo-Saxons in the 5th century, according to Gildas.

St. Gildas, one of a number of Late Latin writers to promulgate an excidium or ruina Britanniae because of moral turpitude.

Much later, Geoffrey of Monmouth included the figure in his pseudohistorical chronicle Historia Regum Britanniae, adding fictional details to Gildas ' account and making Constantine the successor to King Arthur as King of Britain.

In the 12th century Geoffrey of Monmouth adapted Gildas ' account for his chronicle Historia Regum Britanniae, and thereafter Aurelius Conanus was remembered as a legendary King of Britain.