... in the Anglosphere? why did the Irish get such a bad doing round the entire English speaking world? When you put it all in context it actually doesn't add up. The Americans had a revolution because of taxation without representation. They went to war with Britain. The Irish went to war, albeit, a terrorist type guerilla war. The Scottish Presbyterians were more or less the people who started some the kind of political violence in Ireland we're used to - against the British state. The Scots have a long history of rebellion, especially when it comes to their religion being threatened. Then you have the whole Highland thing. I can't think of a single thing about the Welsh, but I'm sure someone will add it.
I don't believe it was just the religious issue, England had it's fair share of RCs, many of them from very wealth established families.