From an on-line biography of Roald Dahl:
By the time Roald was thirteen the family had moved to Kent in England, and he was soon sent off to the famous Repton Public School. His sisters all attended Roedean in Sussex. To Roald, Repton was even worse than St. Peter's. His account of it in Boy includes fagging (younger boys, "fags", were basically personal slaves to the older prefects, called "boazers"), beatings, the torture of new boys, and other miseries common to many, although not all, boys' boarding schools of the time. One particularly scandalous section alleges that a former headmaster of Repton, Geoffrey Fisher (who had subsequently become Archbishop of Canterbury), was a sadistic flogger. According to Dahl, the vicious beatings that this man would deliver, combined with the fact that twenty years later he crowned Queen Elizabeth II in Westminster Abbey, made Dahl doubt the existence of God. In Jeremy Treglown's biography, however, he discoveres that Dahl got his dates mixed up. The beatings he was referring to happened in 1933, a year after Fisher left Repton. Dahl must have gotten Fisher mixed up with J. T. Christie, his successor.
Link.
Dahl rejected God over a mistake of fact? Kinda eerie. Was he looking for an excuse to reject God? Was he fraudulently justifying his stance to others? Or did his memory really deceive him and put his eternal soul in peril?
If the latter, we all ought to be careful when recalling wrongs, especially if we're basing current conduct on them.