The Battle of Moonamean was fought between an Irish Confederate irregular force under Seamus Hennessey and a Parliamentarian patrol in County Waterford, Ireland in September 1642.
Hennessey had assembled a growing following of Irish Catholic peasants who, like him, sought to drive the Protestant Anglo-Irish out of Cork and accrue loot in the process. Hennessey waged guerrilla war against the forces of the English Parliament, and, on 24 September 1642, he pursued a party of Parliamentarian soldiers from County Cork to the coast of County Waterford at Moonemean. There, his numerically superior army overwhelmed the 14-strong Parliamentarian patrol, scoring an easy victory.