Graphic source: Gustave Doré (1832-1883), Public domain.
The Children's Crusade is the name given to a variety of fictional and factual events in 1212 that combine some or all of these elements: visions by a French and/or German boy, an intention to peacefully convert Muslims to Christianity, bands of children marching to Italy, and children being sold into slavery. Several conflicting accounts exist, and the facts of the situation continue to be a subject of discussion among scholars.Cf. Wikipedia.