The Irish struggle against the United Kingdom started back in the reign of Iorwerth, and whilst he was sympathetic to the cause, offered little in practical help to the Republicans. Iago however, had offered help to Sein Fein back in 1918. During 1919 the Irish State fought against the Anglo-Scots alone, with the Welsh Kingdom offering sympathy to the Republican's but little in material aid. This changed with Iago's rise to the throne. As the Welsh government fell, to be replaced with Iago's autocracy, the Welsh sympathies with the Irish began to be translated into material aid.
Throughout the 20th Century, protestants in Ulster, particularly centered around Belfast, had fought to either gain independence or unification with the United Kingdom of England and Scotland.