Williamite War, Jacobite Rebellion in Ireland, or Irish War of 1689-91
1689 CE to 1691 CE
The Williamite War in Ireland, also known as the Jacobite War in Ireland and in Ireland as Cogadh an Dá Rí or The War of the Two Kings, is the opening conflict following the deposition of King James II in 1688 when he attempts to regain the throne of his Three Kingdoms from his daughter Mary II who has replaced him jointly with her husband William of Orange.
It influences the Jacobite Rising in Scotland led by Viscount Dundee which startesat about the same time.
While William successfully defeats Jacobitism in Ireland and subsequent Jacobite Risings are confined to Scotland and England, the War is to have a lasting effect on Ireland, confirming British and Protestant rule over the country for over a century.
The iconic Williamite victories of the Siege of Derry and the Battle of the Boyne are still celebrated by the Unionist community in Northern Ireland today.
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After the death of Charles II in 1685, his Catholic brother King James II & VII is crowned.
From this point, there are various factions pressing for his Protestant daughter Mary and her husband, Prince William III of Orange, to replace him in what becomes known as the Glorious Revolution.
In November 1688, William lands in England with an invading force, and succeeds in being crowned king.
After this, James attempts to retake the throne by force in the Williamite War, and is finally defeated by William at the Battle of the Boyne in 1690.
Northwest Europe (1684–1695 CE): Revolution, War, and New Horizons
England: The Glorious Revolution and Constitutional Change
The period 1684–1695 in England was marked by profound political upheaval, culminating in the Glorious Revolution of 1688. The Catholic policies of James II (reigned 1685–1688) incited opposition from Protestant elites, resulting in his deposition by Parliament and his Protestant daughter, Mary II, and her husband, William III of Orange, ascending the throne jointly. The Revolution's aftermath saw the ratification of the Bill of Rights (1689), significantly curtailing monarchical power, enhancing parliamentary sovereignty, and establishing foundational liberties that shaped future governance.
Ireland: Williamite War and Protestant Ascendancy
Ireland became a focal point of conflict during the Williamite War (1688–1691). James II sought Irish Catholic support to reclaim his throne, but the decisive Protestant victory at the Battle of the Boyne (1690) under William III entrenched Protestant dominance. The war intensified sectarian divisions, solidifying Protestant landownership and setting the stage for centuries of religious and political conflict.
Scotland: Jacobite Risings and Presbyterian Consolidation
Scotland experienced unrest following the Glorious Revolution, highlighted by the Jacobite Rising of 1689, where supporters of James II attempted to restore him. The Jacobites were decisively defeated at the Battle of Killiecrankie (1689), ultimately consolidating Presbyterianism as the state religion, diminishing Catholic influence, and leading to significant social restructuring under William III.
The Nine Years' War: England vs. France
Northwest Europe was significantly impacted by the Nine Years' War (1688–1697), a conflict primarily between the Grand Alliance—comprising England, the Dutch Republic, Spain, and the Holy Roman Empire—and France under Louis XIV. Major battles such as the Battle of Beachy Head (1690) and the naval engagement at La Hogue (1692) defined England's maritime capabilities. The war underscored England's growing global naval power and its key role in continental affairs.
The East India Company's Growing Dominance
The English East India Company further solidified its presence in India, expanding its territorial and economic reach. The failed diplomatic mission of William Hedges in 1682 led to heightened tensions, but the company navigated these challenges, securing critical trade rights and expanding its military fortifications, thus laying the foundation for future British dominance in South Asia. The company's prosperity allowed its officers to establish sprawling estates and businesses in Britain, acquiring significant political influence. However, under pressure from ambitious traders ("Interlopers"), a deregulating act passed in 1694 annulled the century-long monopoly, permitting any English firm to trade with India unless specifically restricted by Parliament.
Denmark-Norway: Strengthening Absolutism and Reforms
Denmark-Norway under Christian V continued its consolidation of absolute monarchy. Efforts to modernize administrative practices through the Danish Law Code of 1683 were expanded, standardizing measures and taxation systems to strengthen royal authority and bureaucratic efficiency.
Intellectual Advances and Cultural Flourishing
The era was marked by significant intellectual and cultural achievements. Isaac Newton's publication of Philosophiæ Naturalis Principia Mathematica (1687) revolutionized physics and mathematics, influencing European scientific thought profoundly. Literary and artistic expressions flourished, with figures like John Locke publishing influential philosophical works such as An Essay Concerning Human Understanding (1689) and Two Treatises of Government(1689), which provided intellectual foundations for modern democracy and empirical philosophy.
Social and Religious Dynamics
Religious tolerance was partially advanced by the Toleration Act of 1689, granting limited freedoms to Nonconformists, yet Catholics and non-trinitarian Protestants remained largely excluded. The social landscape was characterized by ongoing Protestant-Catholic tensions, significantly shaped by the political changes of the Glorious Revolution and conflicts abroad.
Legacy of the Era
By 1695, Northwest Europe had experienced transformative political, religious, and intellectual shifts. The Glorious Revolution and subsequent constitutional reforms fundamentally reshaped governance, asserting parliamentary sovereignty and individual liberties. Continued expansion by the East India Company foreshadowed Britain's imperial future, while the intellectual contributions of Newton, Locke, and their contemporaries laid critical foundations for Enlightenment thinking and modern governance.
James, ousted as king, requests and receives help from the Irish, who still seethe over Cromwell’s confiscations of 1649-50.
With French troops and money on his side in March 1689, James lands in Ireland.
The Irish Parliament does not follow the example of the English Parliament; it declares that James remains King and passes a massive bill of attainder against those who had rebelled against him.
At James' urging, the Irish Parliament passes an Act for Liberty of Conscience that grants religious freedom to all Catholics and Protestants in Ireland.
Tories loyal to King James and the Stewarts band together after the English Parliament’s invitation to William to take over the English throne, and become known as Jacobites (Latin Jacobus: James).
While James is in Ireland, the Jacobites in the highlands of Scotland in 1689 press for James’s restoration.
William, already recognized as king by the majority of Scots, sends troops to suppress them, almost losing at Killiecrankie, until the Jacobite leader, the viscount of Dundee, is killed.
The Jacobites disperse.
The Jacobites lose again in a savage encounter at Dunkeld and retreat to the hills and glens.
James marches on Londonderry, whose Protestants have affirmed their allegiance to King William and Mary, and besieges it for fifteen weeks without victory.
Another Jacobite attempt at Cromdale ends in disaster.
Despite being a relatively minor encounter, the Battle of Cromdale, which takes place at the Haugh of Cromdale near Cromdale in Speyside on April 30 and May 1, 1690, marks the effective end of the Jacobite rising in England.
England passes the Act of Grace on May 20, 1690, forgiving followers of James II.
William III lands in Ireland to confront James.
James has worked to build an army in Ireland, but is ultimately defeated when William arrive, personally leading an army.
The country divides denominationally, but the real issue is not religion but land.
William defeats James at the Battle of the Boyne on July 11, 1690, and reasserts English control of Ireland, although the rebellion is to continue for a further year until the Orange army gains control.