Ah, now that sounds like it has possibilities...care to expand on the concept of how that would work. I'm not that familiar with the Gordon Riots (though I'll be sure to look them up when I have the chance).
Glen
Just had a quick Wiki check to refresh my memory. In 1778 a bill was passed relaxing some of the restrictions on Roman Catholics. In 1780 there was a series of anti-Catholic riots due to this, although the desire for loot seems to have played a significant role.
Lord George Gordon formed a 'Protestant Association' to counter those reforms and drummed up a lot of fears of Catholic uprisings, aided by continental powers. On 2-6-80 he organised a huge march - estimated 40-60 thousand strong which ended up at Parliament. While he was inside presenting a partition things got out of hand outside and a lot of violence resulted.
The army was called out, although not until the 7th, and broke up the crowds, firing on groups of more than 4 who refused to disperse, killing about 285 killed and several hundred wounded. About 20-30 were arrested and tried for treason and Gordan was charged with high treason but aquitted.
Most of this is from the Wiki entry. Sounds like it wouldn't be the best POD for such a republic as you would have had a lot of people opposed to such disorders while little or nothing was planned in terms of a challenge to authority. Also with Britain also de-facto at war with several Catholic powers and much of the army in the Americas - some unrest going on over there at the time
- if some hard line anti-Catholic group had gained power you might well have seen it quickly crushed by internal and external opponents.
Steve