The Conquerors – Documentary – S1, Ep11 – Conqueror of Ireland January 28, 2021 Nicola The Conquerors - Documentary Series (2005) Conqueror of IrelandHow English revolutionary Oliver Cromwell, who overthrew the unpopular king to become the de facto ruler of England, used his British New Model Army to brutally and mercilessly squash the Irish resistance force in 1649.