Reader Buddy prompted me to refresh my memory of the Children's Crusades.
While of no historical importance, there is a cautionary tale in the story.
The story begins:
One day in May 1212 there appeared at Saint-Denis, where King Philip of France was holding his court, a shepherd-boy of about twelve years old called Stephen, from the small town of Cloyes in the Orléannais. He brought with him a letter for the King, which, he said, had been given to him by Christ in person, who had appeared to him as he was tending his sheep and who had bidden him go and preach the Crusade. King Philip was not impressed by the child and told him to go home. But Stephen, whose enthusiasm had been fired by his mysterious visitor, saw himself now as an inspired leader who would succeed where his elders had failed. For the past fifteen years preachers had been going round the country-side urging a Crusade against the Moslems of the East or of Spain or against the heretics of Languedoc. It was easy for an hysterical boy to be infected with the idea that he too could be a preacher and could emulate Peter the Hermit, whose prowess had during the past century reached a legendary grandeur. Undismayed by the King's indifference, he began to preach at the very entrance to the abbey of Saint-Denis and to announce that he would lead a band of children to the rescue of Christendom. The seas would dry up before them, and they would pass, like Moses through the Red Sea, safe to the Holy Land.