Arthour and Merline

Constance, King of England dies, leaving his realm to his son, Constantine or 'King Monk'. When Angus of Denmark invades, the treacherous steward Vortigern arranges the weak king's death and takes over the kingdom. Constantine's brothers, Aurilis Brosias and Uther Pendragon, too young to rule, flee the country. Vortigern banishes the Danes, but his rule is marked by unrest and violence, and when the English rebel he joins forces with Angus to defeat them. Afraid that Aurilis and Uther will return, Vortigern begins to build a stronghold at Salisbury, but the work mysteriously collapses every night. On the advice of his clerks, he sends messengers to seek a child conceived by no man, planning to smear the walls in its blood.

This child, Merlin, is conceived when a virtuous woman is raped by the devil. Christened by her guardian, the hermit Blaise, the child is not evil but has mysterious powers and prodigious wisdom. Merlin is five when Vortigern's men find him, and, after witnessing his powers, present him to the king. Under Merlin's guidance, Vortigern unearths two dragons from the foundations of his castle, who fight to the death. Merlin explains that the victorious dragon represents the righteous heir of England. Then, refusing to help Vortigern further, he returns to Blaise, who records his prophecies in a book.

Aurilis and Uther arrive in Winchester, where Vortigern's men turn against him. He retreats into his castle, which Uther burns to the ground. Then, while Uther seeks Merlin in the forest, Aurilis kills Angus. Uther is crowned and with Merlin's help defeats the Danes, but Aurilis is slain, fulfilling Merlin's prophecy. Uther reigns successfully, conquering many kingdoms and establishing the Round Table. He falls in love with Ygerne, wife of Heol, duke of Cornwall, and, after Merlin has disguised him as her husband, they conceive a child: Arthur. When her husband is slain, Uther and Ygerne marry, while her daughters are given to his knights.

As soon as Arthur is born, Merlin takes him to Sir Antor, who raises him alongside his own child, Kay. Years pass and when Uther dies, his subjects cannot choose a new king. After they pray for a sign a sword appears embedded in a stone, its inscription stating that only the true king can draw it. No one succeeds until Antor, Kay and Arthur attend a nearby tournament and Arthur, looking for a sword for Kay, pulls it out. Antor and Merlin reveal Arthur's parentage and present him to Uther's men. He is crowned in a lavish ceremony, but some kings, including those married to Ygerne's daughters, refuse to accept him. With Merlin's help Arthur and Kay fight the rebels, who flee vowing vengeance. Arthur travels to London, where Merlin advises him to summon his father's old allies, the kings Ban and Bohort (Bors). They help him wage a ferocious battle against the rebellious kings, who eventually retreat again. Merlin predicts difficult times ahead, and urges Arthur to help King Leodegan of Carmalide against his enemy Rioun.

After his departure the Danes return, causing strife throughout the land. The sons of the rebellious kings (including Galaheit, Gawain, Agravain, Gaheris and Gareth) discover that Arthur is their uncle and pledge to be knighted by him, bringing peace between the king and their fathers. They travel to London, where they find the pagans wreaking havoc. Learning of Arthur's absence, the young men engage the pagans in battle, and eventually, with the help of London's constable and aldermen, drive them away. While this is happening, Arthur and a select band of knights arrive at Carmalide, where Leodogan has preserved Uther's Round Table. Keeping their identities secret, they join Leodogan's knights in battle, killing many pagans in a lengthy sequence of battles. Arthur and Guinevere, Leodogan's daughter, fall in love.

With Arthur remaining away, the Danes continue to harass his kingdom. Over a series of skirmishes, and with Merlin's intervention, the various kingdoms become united against them under Gawain's command. As more of Arthur's future knights, including Ywain, join the cause, Merlin returns to Arthur to tell him the news. Realizing the status of his guests, Leodogan betroths Guinevere to Arthur and, when the king reveals his identity, delightedly pays him homage. They re-gather their troops and set out to defeat Rioun, which they finally achieve after many bitter battles, helped by Merlin's enchantments.

Edition used for plot summary: Macrae-Gibson, Of Arthour and of Merlin (1973).