The resulting disappointment with Charles II's religious policy became civil unrest and erupted in violence during the early summer of 1679 with the assassination of Archbishop Sharp, Drumclog and the Battle of Bothwell Bridge. The Sanquhar Declaration of 1680 effectively declared the people could not accept the authority of a king who would not recognise their religion, nor commit to his previous oaths. In February 1685 the king died and was succeeded by his Roman Catholic brother, the Duke of York, as King James VII.