The siege of Drogheda took place from 21 November 1641 to February 1642 during the Irish Rebellion of 1641. A Catholic force under Féilim Ó Néill laid siege to the town but failed to wrest the garrison from the Royalists. During the siege, the Irish rebels made three attempts to break into and capture the town. All three attempts failed and the town was ultimately relieved by English forces.