circumcellion

Century Dictionary and Cyclopedia

1. One of a party of Donatists in northern Africa, chiefly peasants, in the fourth and fifth centuries: so called because they wandered about in bands from place to place. They persistently courted death, wantonly insulting pagans and challenging all they met to kill them, looking upon such a death as a martyrdom. They supported themselves by plunder, and committed so many acts of violence, aggravated by their religious differences from the orthodox, that soldiery often had to be employed against them. They were not entirely extinct till about the close of the fifth century.
2. In the fourth and succeeding centuries, in various places, a vagabond monk, acknowledging no regularly constituted ecclesiastical authority.

Wiktionary

1. n. Alternative capitalization of Circumcellion