When Parliament met in 1376, the Commons, which existed only as an ad hoc body for purposes of consenting to taxes, gathered itself for political action.
“When Parliament met in 1376, the Commons, which existed only as an ad hoc body for purposes of consenting to taxes, gathered itself for political action. First it sought strength by association with the Lords, who represented the permanent Parliament and contained a strong anti-Lancaster faction prepared to challenge the Duke. A council of twelve, consisting of four bishops, four earls, and four barons, was drawn from the Lords to act in concert with the Commons.”