Legends of Charlemagne by Thomas Bulfinch

Charlemagne had not forgotten the offence of Geoffroy, the King of Denmark, in withholding homage, and now prepared to enforce submission. But at this crisis he was waited upon by an embassy from Geoffroy, acknowledging his fault, and craving assistance against an army of invaders who had attacked his states with a force which he was unable to repel. The soul of Charlemagne was too great to be implacable, and he took this opportunity to test that of Ogier, who had felt acutely the unkindness of his father, in leaving him, without regard or notice, fifteen years in captivity. Charles asked Ogier whether, in spite of his father's neglect, he was disposed to lead an army to his assistance. He replied, "A son can never be excused from helping his father by any cause short of death. " Charlemagne placed an army of a thousand knights under the command of Ogier, and great numbers more volunteered to march under so distinguished a leader. He flew to the succor of his father, repelled the invaders, and drove them in confusion to their vessels. Ogier then hastened to the capital, but as he drew near the city he heard all the bells sounding a knell. He soon learned the cause; it was the obsequies of Geoffroy, the King. Ogier felt keenly the grief of not having been permitted to embrace his father once more, and to learn his latest commands; but he found that his father had declared him heir to his throne. He hastened to the church where the body lay; he knelt and bathed the lifeless form with his tears. At that moment a celestial light beamed all around, and a voice of an angel said, "Ogier, leave thy crown to Guyon, thy brother, and bear no other title than that of ‘The Dane. ' Thy destiny is glorious, and other kingdoms are reserved for thee. " Ogier obeyed the divine behest. He saluted his stepmother respectfully, and embracing his brother, told him that he was content with his lot in being reckoned among the paladins of Charlemagne, and resigned all claims to the crown of Denmark.

Ogier returned covered with glory to the court of Charlemagne, and the Emperor, touched with this proof of his attachment, loaded him with caresses, and treated him almost as an equal.