Why did some Tories oppose the Catholic Emancipation Act of 1829?

Many Tories opposed the Catholic Emancipation Act of 1829 because they viewed the inclusion of Roman Catholics in British public life as anathema. For decades, these politicians—often referred to as "ultra-Tories"—held deep-seated fears regarding the potential influence of Catholics in government and Parliament, viewing such participation as a threat to the established order.12

Prior to 1829, many Tories, including Arthur Wellesley, 1st Duke of Wellington and Robert Peel, had publicly declared themselves against emancipation. The opposition was rooted in a long-standing commitment to maintaining the Protestant character of the state and protecting the existing constitutional framework. When Wellington eventually pursued the act to prevent the threat of civil war in Ireland, he faced significant resistance from within his own party. While the majority of Tories eventually obeyed his order to "right-about face," a faction of ultra-Tories defied him to the end, viewing the concession as a betrayal of their core principles.12