killed Macbeth 1057, reigned 1058-93,
He’s an ancestor of Gen. Robert E. Lee.

Malcolm, having defeated Macbeth, was proclaimed King at Scoon, April, 1057. It is stated that, now being established on the throne, a secret conspiracy was formed against his life. The plot being revealed to Malcolm, he invited the chief conspirator to court, and, having engaged him in a familiar conversation, led him to a retired valley. The King being alone with the conspirator, after upbraiding him with the favor conferred upon him, confronted him with a detail of the plot, and added, "Now we are both armed; attack me if you dare, and obtain by your valor, the prize you seek by treachery." The surprised noble threw himself to the ground, and obtained pardon from one not less merciful than brave. Malcolm married Magaret Atheling, the granddaughter of Edmund Ironside, and the daughter of Edward Atheling, by Agatha, daughter of the Emperor Henry II, of Germany. In the year 1068 Edgar Atheling, with his mother and two sisters, privately withdrew from the court of William the Conqueror, and took shipping, with the intention of seeking refuge in Hungary; but the vessel, by contrary winds, was driven into Frith of Fourth. Miss Strickland writes: "Malcolm Canmore, the young unmarried King of Scotland, who had just regained his dominions, happened to be present when the royal fugitives landed, and was so struck with the beauty of the lady Margaret Atheling, that in a few days, he asked her in marriage of her brother. Edgar joyfully gave the hand of the dowerless Princess to the young and handsome sovereign, who had received the exiled English in the most generous and honorable manner, and whose disinterested affection was sufficient testimony of his disposition. After her marriage, the Saxon Princess became the happy instrument of diffusing the blessings of Christianity throughout her husband's dominions, commencing the work of conversion in the proper place, her own household and court. The influence which her personal charms had, in the first instance, won over the heart of her royal husband, her virtues and mental powers increased and retained to the last hour of Malcolm's existence."
        William the Conqueror on being informed of the arrival of the Saxon royal family in Scotland, sent an ambassador to Malcolm demanding that Edgar should be delivered up to him, and threatening war in case of refusal. Malcolm, who considered it both faithless and cruel, to surrender his suppliant, his guest and relation, a man against whom even his foes could allege no crime, into the hands of an enemy, determined to endure every extremity at whatever cost it might be, than basely yield to the demand of William. War was the result of this refusal. The Conqueror regarding the Scottish war as a thing of little importance, sent Roger, a Norman nobleman, against Malcolm. But the King defeated and dispersed this army. Richard, Earl of Gloucester, was then sent with a stronger force, but he was incessantly harassed by Patrick Dunbar, an ancestor of General Lee, and kept constantly engaged in light skirmishes, so that he accomplished but little. Odo, William's brother, was now sent with a much more powerful body of forces, and committed extensive ravages in Northumberland. But on his return, with an immense booty, he was attacked by Malcolm, who recovered the spoil, besides inflicting considerable slaughter and making many prisoners. The army being recruited, William's eldest son, Robert, an accomplished knight and able general, was placed in command. But he rather repelled the Scots than prosecuted an aggressive war. He entered into a negotiation with the Scottish monarch, which ended in a friendly treaty. External peace was followed by intestine disorders. Malcolm set himself industriously to work, in composing these difficulties and reforming public morals. In the meantime William Rufus ascended the throne of England Seeking an occasion of war with the Scots, he surprised the castle of Alnwick, and put the garrison to death; and Malcolm after having in vain demanded restitution, laid siege to the place with a large army. The besieged being reduced to extremity, requested a parley, to treat of surrender; and desired that the King in person would come to receive the keys, which were offered on the point of a spear. Malcolm whilst in the act of accepting them, was treacherously killed. His oldest son, Edward, sprang forward to avenge his father's death, but received a wound, of which he almost instantly expired. Margaret, overwhelmed with grief at the loss of her beloved husband and son, did not long survive the calamity. Thus Malcolm, in 1093, fell, and as Buchanan says: "After having reigned thirty six years, transmitted to posterity a name stained by no vice, but distinguished by many illustrious virtues.


Although he had given sanctuary to Tostig Godwinson when the Northumbrians drove him out, Malcolm was not directly involved in the ill-fated invasion of England by Harald Hardraade and Tostig in 1066, which ended in defeat and death at the battle of Stamford Bridge.[35] In 1068, he granted asylum to a group of English exiles fleeing from William of Normandy, among them Agatha, widow of Edward the Confessor's nephew Edward the Exile, and her children: Edgar Ætheling and his sisters Margaret and Cristina. They were accompanied by Gospatric, Earl of Northumbria. The exiles were disappointed, however, if they had expected immediate assistance from the Scots.[36]
In 1069 the exiles returned to England, to join a spreading revolt in the north. Even though Gospatric and Siward's son Waltheof submitted by the end of the year, the arrival of a Danish army under Sweyn Estridsson seemed to ensure that William's position remained weak. Malcolm decided on war, and took his army south into Cumbria and across the Pennines, wasting Teesdale and Cleveland then marching north, loaded with loot, to Wearmouth. There Malcolm met Edgar and his family, who were invited to return with him, but did not. As Sweyn had by now been bought off with a large Danegeld, Malcolm took his army home. In reprisal, William sent Gospatric to raid Scotland through Cumbria. In return, the Scots fleet raided the Northumbrian coast where Gospatric's possessions were concentrated.[37] Late in the year, perhaps shipwrecked on their way to a European exile, Edgar and his family again arrived in Scotland, this time to remain. By the end of 1070, Malcolm had married Edgar's sister Margaret, the future Saint Margaret of Scotland.

He gave refuge to a group fleeing the Norman conquest, among them Agatha, widow of Edward the Confessor's nephew Edward the Exile, and her children: Edgar Ætheling and his sisters Margaret and Cristina.

While marching north again, Malcolm was ambushed by Robert de Mowbray, Earl of Northumbria, whose lands he had devastated, near Alnwick on 13 November 1093. There he was killed by Arkil Morel, steward of Bamburgh Castle. The conflict became known as the Battle of Alnwick.[50] Edward was mortally wounded in the same fight. Margaret, it is said, died soon after receiving the news of their deaths from Edgar.