The name which St. Francis of Assisi gave to his followers, early in the 13th century.
(b)
A sect which seceded from the Franciscan Order, chiefly in Italy and Sicily, in 1294, repudiating the pope as an apostate, maintaining the duty of celibacy and poverty, and discountenancing oaths. Called also Fratricellians and Fraticelli.
... goods, more or less complete, and a denial of the rights of private property was part of the teaching of many sects which were condemned as heretical—for instance, the Albigenses, the Vaudois, the Begards, the Apostoli, and the Fratricelli. (See Brants, ... — An Essay on Mediaeval Economic Teaching • George O'Brien