From A Great and Terrible King: Edward I and the Forging of Britain, by Marc Morris (Pegasus, 2015), Kindle pp. 3-4:
Henry, although king of England, was ancestrally and culturally French. He and his family were direct descendants of William the Conqueror, the Norman duke who had snatched England’s throne some 170 years earlier. Similarly, his leading subjects were all directly descended from the Conqueror’s Norman companions. When they talked to each other they spoke French (or at least a slightly anglicised, Norman version of it), and, when they came to christen their children, they gave them French names. William (Guillaume), for example, was still a popular name, for obvious reasons. So too was Richard (Ricard), because it evoked the memory of Henry’s famous uncle, Richard the Lionheart. And Henry (Henri) itself was perfectly respectable and commonplace. Henry III might have been rather limited in his abilities, but his two namesake predecessors had both been fearsome and successful warrior kings, worthy of commemoration and emulation.
All these options, however, Henry rejected. He had no desire to father conquerors, or for that matter crusaders. Thanks to his own father, the notorious King John, he had grown up surrounded by uncertainty and conflict. John had died in the midst of a self-inflicted civil war, bequeathing to his son a kingdom scarred and divided. What Henry craved above all for himself and his subjects was peace, harmony and stability. And it was a reflection of this ambition that he decided to call his son Edward.
Edward was a deeply unfashionable name in 1239 – no king or nobleman had been lumbered with it since the Norman Conquest, because it belonged to the side that had lost. Edward was an Old English name, and it sounded as odd and outlandish to Norman ears after 1066 as other Old English names – Egbert, Æthelred, Egfrith – still sound to us today. To call a boy such a name after the Conquest was to invite ridicule; he was bound to be mocked by the Williams, Richards and Henrys who were his peers.
But Henry III had good reason for foisting this unfashionable name on his firstborn son. After his father’s death, his mother had abandoned him – Isabella of Angouleme left England for her homeland in France, remarried and never returned. Effectively orphaned from the age of nine, the young king had found substitute father figures among the elderly men who had helped him govern his kingdom. But these men too, Henry ultimately decided, had failed him, and by 1234 he found himself alone once more. It was at this point, though, that the king discovered a new mentor, a man who would never, ever let him down – largely because he had already been dead for the best part of two centuries.
Henry’s new patron was Edward the Confessor, the penultimate king of Anglo-Saxon England. Like Henry himself, Edward had not been a very successful ruler: his death in January 1066 had sparked the succession crisis that led to the Norman Conquest nine months later. Posthumously, however, Edward had acquired a reputation as a man of great goodness – so much so that, a century after his death, he had been officially recognised as a saint. Thereafter his reign had acquired the retrospective glow of a golden age: men spoke with great reverence about his good and just laws (even though, in reality, he never made any). Of course, the fact that Edward was not a great warrior had made him an unlikely exemplar for the conquering dynasty of kings who came after him. But to a man like Henry III, who was entirely lacking in military skill, the Confessor seemed the perfect role model.