Outlaw associate of the Cowboys faction.
Ringo's manipulation and killing of McMasters intensify the revenge conflict.
Ringo lures McMasters under the pretense of parley, delivers his corpse, and uses the act to challenge Wyatt.
McMasters switches sides and supports Wyatt's retaliatory mission.
A reformed Cowboy named Sherman McMasters joins Wyatt, Doc, and the other posse members seeking revenge.
They share operational allegiance within Wyatt's group.
Both are named members of the posse assembled by Wyatt to seek revenge against the Cowboys.
McMasters' later alliance with Wyatt implies a break from Curly Bill's faction.
Sherman McMasters is described as a reformed Cowboy, and Curly Bill is the Cowboy leader.
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Related entry on Wikidata (Q3959415), public domain (CC0).