The disagreements between the leading barons involved in the revolt soon became evident. Simon championed radical reforms that would place further limitations on the authority and power of the major barons as well as the Crown; others, such as Hugh Bigod, promoted only moderate change, while the conservative barons, such as Richard, expressed concerns about the existing limitations on the King's powers. Henry's son, Edward, initially opposed the revolution, but then allied himself with de Montfort, helping him to pass the radical Provisions of Westminster in 1259, which introduced further limits on the major barons and local royal officials.