At a meeting held at Tara in 1843, it was estimated that 750,000 people were present. Despite such a presence, British policymakers strongly supported the union and thought that giving into O'Connell's demands would dismantle the empire
In October 1843, the British Parliament banned a meeting of the Repeal Association to be held in Clontarf. As O'Connell wanted to operate within the law, he cancelled the gathering
The failed meeting signalled the end of the repeal movement because it undermined the principle that a peaceful organisation could force change. Unwilling to offer an aggressive challenge, and having lost credibility, O'Connell's movement had diminished by 1844