At the outbreak of the First English Civil War, Ireton joins the Parliamentary army, commanding a cavalry force in the indecisive Battle of Edgehill in October 1642, and at the Battle of Gainsborough in July 1643. In 1643 he meets and befriends Oliver Cromwell, then a colonel in the army of eastern England. Cromwell appoints him deputy governor of the Isle of Ely in 1644, and he fights at the Parliamentary victories in the Battle of Marston Moor (July 1644), and the Battle of Naseby (June 1645). In the summer of 1646 he marries Cromwell’s eldest daughter, Bridget. The marriage brings Ireton’s career into parallel with Cromwell’s.
Although Ireton’s military record is distinguished, he earns his fame in politics. Elected to Parliament in 1645, he looks on while a conflict develops between the Independents in the army and the Presbyterians who control the House of Commons. In 1647 he presents his “Heads of the Proposals,” a constitutional scheme calling for division of political power among army, Parliament, and king and advocating religious tolerance for Anglicans and Puritans. These proposals for a constitutional monarchy are rejected by the king. At the same time they are attacked by the Levellers, a group that calls for manhood suffrage and an unfettered liberty of conscience in matters of religion.
Ireton then turns against the king. When the Independents in the army triumph over Parliament during the second phase of the Civil War, his “Remonstrance of the Army” provides the ideological foundation for the assault on the monarchy. He helps to bring Charles I to trial and is one of the signatories of the king’s death warrant. From 1649 to 1651 he prosecutes the government’s cause against Roman Catholic rebels in Ireland, becoming Lord Deputy of Ireland and acting commander in chief in 1650.
In early June 1650, Ireton mounts a counter-guerrilla expedition into the Wicklow Mountains to secure his lines of supply for the Siege of Waterford in southeast Ireland. Thomas Preston surrenders Waterford after a three-month siege. Ireton then advances to Limerick by October, but has to call off the siege due to cold and bad weather. He returns to Limerick in June 1651 and besieges the city for five months until it surrenders in October 1651. At the same time, parliamentarian forces conduct the Siege of Galway, and he rides to inspect the command of Charles Coote, who is blockading that city. The physical strain of his command takes hold and he falls ill.
After the capture of Limerick, Ireton has dignitaries of Limerick hanged for their defence of the city, including Alderman Thomas Stritch, Bishop Terence O’Brien, and an English Royalist officer, Colonel Fennell. He also wants the Irish commander, Hugh Dubh O’Neill hanged, but Edmund Ludlow cancels the order after Ireton’s death.
Ireton falls ill of the plague that is raging through the town, and dies on November 26, 1651. His loss reportedly “struck a great sadness into Cromwell” and he is considered a great loss to the administration. At his funeral in Westminster Abbey, John Watson and others wear new tabards that replace the royal arms with the new arms of the commonwealth.
On January 30, 1661, following the Restoration of the English monarchy of 1660, Charles II has Ireton’s corpse exhumed from Westminster and mutilated in a posthumous execution, along with those of Cromwell and John Bradshaw, in retribution for signing his father’s death warrant. The date is symbolic, being the 12th anniversary of the execution of Charles I.
(Pictured: Painting of Henry Ireton, circa 1650, National Portrait Gallery: NPG 3301)
As a young man O’Neill leaves Ireland, one of the ninety-nine involved in the Flight of the Earls escaping the English conquest of his native Ulster. He grows up in the Spanish Netherlands and spends 40 years serving in the Irish regiment of the Spanish army. He sees most of his combat in the Eighty Years’ War against the Dutch Republic in Flanders, notably at the Siege of Arras, where he commands the Spanish garrison. He also distinguishes himself in the Franco-Spanish War by holding out for 48 days with 2,000 men against a French army of 35,000.
O’Neill is, like many Gaelic Irish officers in the Spanish service, very hostile to the English Protestant presence in Ireland. In 1627, he is involved in petitioning the Spanish monarchy to invade Ireland using the Irish Spanish regiments. He proposes that Ireland be made a republic under Spanish protection to avoid in-fighting between Irish Catholic landed families over which of them would provide a prince or king of Ireland. This plot comes to nothing. However in 1642, He returns to Ireland with 300 veterans to aid the Irish Rebellion of 1641.
The subsequent war, known as the Irish Confederate Wars, is part of the Wars of the Three Kingdoms, civil wars throughout Britain and Ireland. Because of his military experience, O’Neill is recognised on his return to Ireland in July 1642, at Doe Castle in County Donegal, as the leading representative of the O’Neills and head of the Ulster Irish. Sir Phelim O’Neill resigns the northern command of the Irish rebellion in his favour and escorts him from Lough Swilly to Charlemont.
Jealousy between the kinsmen is complicated by differences between O’Neill and the Catholic Confederation which meet at Kilkenny in October 1642. O’Neill professes to be acting in the interest of Charles I, but his real aim is the complete Independence of Ireland as a Roman Catholic country, while the Old English Catholics represented by the council desire to secure religious liberty and an Irish constitution under the crown of England. More concretely, O’Neill wants the Plantation of Ulster overturned and the recovery of the O’Neill clan’s ancestral lands. Moreover, he is unhappy that the majority of Confederate military resources are directed to Thomas Preston‘s Leinster army. Preston is also a Spanish veteran but he and O’Neill have an intense personal dislike of each other.
Although O’Neill is a competent general, he is outnumbered by the Scottish Covenanter army that lands in Ulster in 1642. Following a reverse at Clones, he has to abandon central Ulster and is followed by thousands of refugees, fleeing the retribution of the Scottish soldiers for some atrocities against Protestants in the rebellion of 1641. He does his best to stop the killings of Protestant civilians, for which he receives the gratitude of many Protestant settlers. From 1642–1646 a stalemate exists in Ulster, which he uses to train and discipline his Ulster Army. This poorly supplied force nevertheless gains a very bad reputation for plundering and robbing friendly civilians around its quarters in northern Leinster and southern Ulster.
In 1646 O’Neill, with substantial Gallowglass numbers and additionally furnished with supplies by the Papal Nuncio, Giovanni Battista Rinuccini, attacks the Scottish Covenanter army under Major-General Robert Monro, who had landed in Ireland in April 1642. On June 5, 1646 O’Neill utterly routs Monro at the Battle of Benburb, killing or capturing up to 3,000 Scots. However after being summoned to the south by Rinuccini, he fails to take advantage of the victory, and allows Monro to remain unmolested at Carrickfergus.
In March 1646 a treaty is signed between James Butler, 1st Duke of Ormond and the Catholics, which would have committed the Catholics to sending troops to aid the Royalist cause in the English Civil War. The peace terms however, are rejected by a majority of the Irish Catholic military leaders and the Catholic clergy including the Nuncio, Rinuccini. O’Neill leads his Ulster army, along with Thomas Preston’s Leinster army, in a failed attempt to take Dublin from Ormond. However, the Irish Confederates suffer heavy military defeats the following year at the hands of Parliamentarian forces in Ireland at Dungan’s Hill and Knocknanauss, leading to a moderation of their demands and a new peace deal with the Royalists. This time O’Neill is alone among the Irish generals in rejecting the peace deal and finds himself isolated by the departure of the papal nuncio from Ireland in February 1649.
So alienated is O’Neill by the terms of the peace the Confederates have made with Ormond that he refuses to join the Catholic/Royalist coalition and in 1648 his Ulster army fights with other Irish Catholic armies. He makes overtures for alliance to George Monck, 1st Duke of Albemarle, who is in command of the parliamentarians in the north, to obtain supplies for his forces, and at one stage even tries to make a separate treaty with the English Parliament against the Royalists in Ireland. Failing to obtain any better terms from them, he turns once more to Ormond and the Catholic confederates, with whom he prepares to co-operate more earnestly when Oliver Cromwell‘s arrival in Ireland in August 1649 brings the Catholic party face to face with serious danger.
Before, however, anything is accomplished by this combination, O’Neill dies on November 6, 1649 at the O’Reilly stronghold of Cloughoughter Castle located on an island in Lough Oughter in County Cavan. There is no clear evidence of the cause of death, with one belief being that he was poisoned by a priest, while others think it is more likely that he died from an illness resulting from an old wound. Under cover of night he is reputed to have been brought to the Franciscan abbey in Cavan town for burial. However some local tradition still suggests that it may have been at Trinity abbey located upon an island in Lough Oughter, which may be more likely given the logistics of his removal. His death is a major blow to the Irish of Ulster and is kept secret for some time.
The Catholic nobles and gentry meet in Ulster in March 1650 to appoint a commander to succeed O’Neill, and their choice is Heber MacMahon, Roman Catholic Bishop of Clogher, the chief organiser of the recent Clonmacnoise meeting. O’Neill’s Ulster army is unable to prevent the Cromwellian conquest of Ireland, despite a successful defence of Clonmel by O’Neill’s nephew Hugh Dubh O’Neill and is destroyed at the Battle of Scarrifholis in County Donegal in 1650. Its remnants continue guerrilla warfare until 1653, when they surrender at Cloughoughter Castle in County Cavan. Most of the survivors are transported to serve in the Spanish Army.
By 1650, The Irish Confederates and their English Royalist allies have been driven out of eastern Ireland by the Cromwellian conquest of Ireland. They occupy a defensive position behind the River Shannon, of which Limerick is the southern stronghold. Oliver Cromwell himself had left Ireland in May 1650, delegating his command of the English Parliamentarian forces to Henry Ireton. Ireton moves his forces north from Munster to besiege Limerick in October 1650. The weather, however, is increasingly wet and cold and Ireton is forced to abandon the siege before the onset of winter.
Ireton returns the following June with 8,000 men, 28 siege artillery pieces and four mortars. He then summons Hugh Dubh O’Neill, the Irish commander of Limerick, to surrender but is refused. The siege is on.
Limerick in 1651 is split into two sections, English town and Irish town, which are separated by the Abbey River. English town, which contained the citadel of King John’s Castle, is encircled by water and known as King’s Island. Thomond bridge is the only entrance onto the island and is fortified with bastioned earthworks. Irish town is more vulnerable, but is also more heavily fortified. Its medieval walls have been buttressed by 20 feet of earth. In addition, Irish town has a series of bastions along its walls, mounted with cannon covering its approaches. The biggest of these bastions are at St. John’s Gate and Mungret gate.
Due to Limerick’s fortification, Ireton does not risk an assault on its walls. Instead he secures the approaches to the city, cuts off its supplies and builds artillery earthworks to bombard the defenders. His troops take the fort at Thomond bridge, but the Irish destroy the bridge itself, denying the Parliamentarians land access to English town. Ireton then tries an amphibious attack on the city, which is initially successful, but O’Neill’s men counterattack and beat them off. After this failed attack, Ireton resolves to starve the city into submission and builds two forts on nearby Singland Hill. An Irish attempt to relieve the city from the south is routed at the battle of Knocknaclashy. O’Neill’s only hope is to hold out until bad weather and hunger force Ireton to lift the siege. O’Neill tries to send the town’s old men, women and children out of the city so that his supplies will last a little longer. However, Ireton’s men kill 40 of these civilians and send the rest back into Limerick.
O’Neill comes under pressure from the town’s mayor and civilian population to surrender. The town’s garrison and civilians suffer terribly from hunger and disease. Ireton finds a weak point in the defenses of Irish town and knocks a breach in them, opening the prospect of an all out assault. Eventually, in October 1651, six months after the siege had started, part of Limerick’s garrison mutiny and turn some cannon inwards, threatening to fire on O’Neill’s men unless they surrender. Hugh Dubh O’Neill surrenders Limerick on October 27. The inhabitants lives and property are respected, but they are warned that they could be evicted in the future.
The garrison is allowed to march to Galway, which is still holding out, but has to leave their weapons behind. However, the lives of the civilian and military leaders of Limerick are excepted from the terms of surrender. Catholic Bishop Terence Albert O’Brien, an Alderman and the English Royalist officer Colonel Fennell are hanged. O’Neill is also sentenced to death, but is reprieved by the Parliamentarian commander Edmund Ludlow and imprisoned instead in London. Former mayor Dominic Fanning is drawn, quartered, and decapitated, with his head mounted over St. John’s Gate.
(Pictured: King John’s Castle on King John’s Island, Limerick)
By 1650, the Irish Confederates and their English Royalist allies have been driven out of eastern Ireland by the Cromwellian conquest of Ireland. They occupy a defensive position behind the River Shannon, of which Limerick is the southern stronghold. Oliver Cromwell himself leaves Ireland in May 1650, delegating his command of the English Parliamentarian forces to Henry Ireton. Ireton moves his forces north from Munster to besiege Limerick in October of that year. However, the weather is increasingly wet and cold and Ireton is forced to abandon the siege before the onset of winter.
Ireton returns on June 4, 1651 with 8,000 men, 28 siege artillery pieces and 4 mortars. He summons Hugh Dubh O’Neill, the Irish commander of Limerick to surrender, but is refused. The siege is on.
Limerick in 1651 is split into two sections, English town and Irish town, which are separated by the Abbey River. English town, which contains the citadel of King John’s Castle, is encircled by water, the Abbey River on three sides and the River Shannon on the other, in what is known as King’s Island. Thomond bridge is only one bridge onto the island and is fortified with bastioned earthworks. Irish town is more vulnerable, but is also more heavily fortified. Its medieval walls have been buttressed by 20 feet of earth, making it difficult to knock a breach in them. In addition, Irish town has a series of bastions along its walls, mounted with cannon which cover its approaches. The biggest of these bastions are at St. John’s Gate and Mungret gate. The garrison of the city is 2,000 strong and composed mainly of veterans from the Confederate’s Ulster army, commanded by Hugh Dubh O’Neill, who had distinguished themselves at the siege of Clonmel the previous year.
Because Limerick is very well fortified, Ireton does not risk an assault on its walls. Instead he secures the approaches to the city, cuts off its supplies and builds artillery earthworks to bombard the defenders. His troops take the fort at Thomond bridge, but the Irish destroy the bridge itself, denying the Parliamentarians land access to English town. Ireton then tries an amphibious attack on the city, a storming party attacking the city in small boats. They are initially successful, but O’Neill’s men counterattack and beat them off.
After this attack fails, Ireton resolves to starve the city into submission and builds two forts known as Ireton’s fort and Cromwell’s fort on nearby Singland Hill. An Irish attempt to relieve the city from the south is routed at the battle of Knocknaclashy. O’Neill’s only hope is now to hold out until bad weather and hunger force Ireton to raise the siege. To this end, O’Neill tries to send the town’s old men, women and children out of the city so that his supplies will last a little longer. However, Ireton’s men kill forty of these civilians and send the rest back into Limerick.
O’Neill comes under pressure from the town’s mayor and civilian population to surrender. The town’s garrison and civilians suffer terribly from hunger and disease, especially an outbreak of plague. In addition, Ireton finds a weak point in the defences of Irish town, and knocks a breach in them, opening the prospect of an all out assault.
Eventually in October 1651, six months after the siege started, part of Limerick’s garrison mutinies and turns some cannon inwards, threatening to fire on O’Neill’s men unless they surrender. Hugh Dubh O’Neill surrenders Limerick on October 27. The inhabitants lives and property are respected, but they are warned that they could be evicted in the future. The garrison is allowed to march to Galway, which is still holding out, but has to leave their weapons behind.
The lives of the civilian and military leaders of Limerick are excepted from the terms of surrender. A Catholic Bishop Terence Albert O’Brien, an Alderman and the English Royalist officer Colonel Fennell are hanged. O’Neill is also sentenced to death, but is reprieved by the Parliamentarian commander Edmund Ludlow and imprisoned instead in London. Former mayor Dominic Fanning is drawn, quartered, and decapitated, with his head mounted over St. John’s Gate.
Over 2,000 English Parliamentary soldiers die at Limerick, mostly from disease. Among them is Henry Ireton, who dies a month after the fall of the city. About 700 of the Irish garrison and an estimated 5,000 citizens die.
(Pictured: The Treaty Stone on which the treaty of Limerick may have been signed in 1691)
An alliance of Irish 
seamus dubhghaill 