E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
White Brethren or White-clad Brethren.
A sect in the beginning of the fifteenth century. Mosheim says (bk. ii. p. 2, chap. v.) a certain priest came from the Alps, clad in white, with an immense concourse of followers all dressed in white linen also. They marched through several provinces, following a cross borne by their leader. Boniface X. ordered their leader to be burnt, and the multitude dispersed.