White BRETHREN, fratres albi, were the followers of a leader about the beginning of the fifteenth century, who was arrayed in a white garment; and as they were also clothed in white linen, they were distinguished by this title. Their leader was a priest from the Alps, who carried about a cross, like a standard, and whose apparent sanctity and devotion drew together a number of followers. This deluded enthusiast practised many acts of mortification and penance, endeavoured to persuade the European nations to renew the holy war, and pretended that he was favoured with divine visions. Boniface IX. ordered him to be apprehended and committed to the flames, upon which his followers dispersed.