The Irish Confederate Wars took place from 1641 to 1653. It was the Irish theatre of the Wars of the Three Kingdoms, a series of civil wars in Ireland, England and Scotland, all then ruled by Charles I. The conflict caused an estimated 200,000 deaths from fighting, as well as war-related famine and disease.
It began with the Irish Rebellion of 1641, when local Catholics tried to seize control of the Dublin Castle administration. They wanted an end to anti-Catholic discrimination, to increase Irish self-governance, and to roll back the Plantations of Ireland. They also wanted to prevent an invasion by anti-Catholic English Parliamentarians and Scottish Covenanters, who were defying the king. Rebel leader Felim O'Neill claimed to be doing the king's bidding, but Charles condemned the rebellion after it broke out. The rebellion developed into an ethnic conflict between Irish Catholics on one side, and English and Scottish Protestant colonists on the other. These first few months were marked by ethnic cleansing and massacres in Ulster.