Defenders (Ireland)
The Defenders (Irish: Na Cosantóirí) were a popular, oath-bound, society that reflected the range of Catholic grievance in late 18th-century Ireland. First formed as a vigilante response to the violence with which Protestants resisted competition for tenancies and employment in County Armagh, the Defenders spread rapidly as a lodge-based based fraternity across Ulster and into Leinster and Dublin City.