With roots going back into the 1700s, they were organized early in the 1800s from the union of two similar groups, one led by Barton Stone and the other by Alexander Campbell (the latter being the more influential, the group is sometimes referred to in a pejorative manner as "Campbellism"). | With roots going back into the 1700s, they were organized early in the 1800s from the union of two similar groups, one led by Barton Stone and the other by Alexander Campbell (the latter being the more influential, the group is sometimes referred to in a pejorative manner as "Campbellism"). |