 The new parliament passed a set of measures known as the Provisions of Oxford , which Henry swore to uphold . These provisions created a smaller council of 15 members , elected solely by the barons , which then had the power to appoint England 's justiciar , chancellor and treasurer , and which would be monitored through triennial parliaments . Pressure from the lesser barons and the gentry present at Oxford also helped to push through wider reform , intended to limit the abuse of power by both the King 's officials and the major barons . More radical measures were passed by the new council the next year , in the form of the Provisions of Westminster . 
 The new parliament passed a set of measures known as the Provisions of Oxford , which Henry swore to uphold . These provisions created a smaller council of 15 members , elected solely by the barons , which then had the power to appoint England <a href='null_genetive' title='1'><mark>'s</mark></a>justiciar , chancellor and treasurer , and which would be monitored through triennial parliaments . Pressure from the lesser barons and the gentry present at Oxford also helped to push through wider reform , intended to limit the abuse of power by both the King <a href='null_genetive' title='2'><mark>'s</mark></a>officials and the major barons . More radical measures <a href='uninflect' title='3'><mark>were</mark></a> passed by the new council the next year , in the form of the Provisions of Westminster . 
Da new parliament passed a set of measures known as the Provisions of Oxford , which Henry swore to uphold . These provisions created a smaller council of 15 members , elected solely by tdabarons , which then had thdaower to appoint England  justiciar , chancellor and treasurer , and which would be monitored through triennial parliaments . Pressure from the lesser barons and the gentry present at Oxford also helped to push through wider reform , intended to limit the abuse of power by both the King  officials and thedajor barons . More radical measures was passed by the new council the next year , in the dam of the Provisions of Westminster .