Lord Lieutenant Thomas Wentworth, arriving in Ireland in 1633, unified disparate Ireland into opposition, culminating in his 1641 impeachment, trial, and execution in London. Months later, Ulster and then Ireland more broadly, rose in rebellion. Milton’s first published prose works, including his formative anti-prelatical tracts precede and follow the Ulster Rising. Increasingly Milton addresses Ireland, and the Rising. In James Ussher, Archbishop of Armagh, Milton finds an Irish interlocutor, and foil.