TheRockingham Whigs (orRockinghamites) in 18th-century British politics were a faction of theWhigs led byCharles Watson-Wentworth, 2nd Marquess of Rockingham, from about 1762 until his death in 1782. The Rockingham Whigs briefly held power from 1765 to 1766 and again in 1782, and otherwise were usually in opposition to the various ministries of the period.

The faction came into existence in 1762, following the dismissal of theDuke of Newcastle'sgovernment and the dismissal of many of Newcastle's supporters from their posts by his successor,Lord Bute, in the so-called "Massacre of the Pelhamite Innocents".

For many years Newcastle and his late brotherHenry Pelham had dominated parliament and government through their mastery ofpatronage and the "old corruption", to the point where KingGeorge II had proved incapable of dispensing with their services even when he desired to. When the new king,George III, came to the throne in 1760, he was determined to reassert royal power and take the patronage mechanism away from Newcastle and his faction. After their fall from power Newcastle and his remaining loyalists came together to oppose Bute and assert what they believed to beWhig principles dating back to the political conflicts of the previous century. The faction was heavily dominated by wealthy aristocrats, and because of Newcastle's advanced age, effective leadership soon came into the hands of the very wealthy young aristocrat the Marquess of Rockingham, who soon gave his name to the group.

Although the Rockingham Whigs were briefly brought into power in 1765, following the fall of theministry ofGeorge Grenville, thisministry was based on an always uneasy relationship with the crown and collapsed a year later.

In fact, the faction showed less interest in holding office than in preventing a reassertion of royal power. They were prepared to unite with reformers of all kinds to preserve the constitutional settlement of 1689. But their essentiallyaristocratic andoligarchic character prevented them from collaborating with "Country Party" reformers advocating radical or populistic measures.^[3] They also opposed the British position which led to theAmerican Revolution and sought reconciliation after it.

The writer and philosopherEdmund Burke, who served as Rockingham's private secretary, was one of the faction's leading spokesmen in theHouse of Commons.^[4]

They did not favor Irish constitutional goals but when out of power they used Irish problems to embarrass the government. During Rockingham's government in 1765–66, his faction was generally hostile to the Irish Patriot Party, but during the administration of Lord North in 1770–82, it supported the Patriots' charges of mismanagement of Irish affairs. In power again in 1782, the Rockinghamites made concessions to the Patriots' demand for Irish legislative independence. They sought and failed to obtain a permanent solution that would have involved British control over external legislation and Irish control over internal affairs. They also failed to implement British party models in Ireland. RockinghamitesCharles James Fox and Burke were actively involved in Irish issues, says Powell, the former opportunistically and the latter with a genuine interest in reform.

In 1782 they joined forces with other members of the Opposition to bring down theNorth government which had overseen the American War since the beginning, and was blamed for the surrender of the British army at Yorktown. The new government was led by Rockingham and began to seek peace terms, laying the foundations for theTreaty of Paris agreed in 1783. Rockingham's unexpected death in July 1782 led to a split in the new government with some Rockingham Whigs remaining in office under the new government of Lord Shelburne, and others going into opposition led byCharles James Fox andEdmund Burke. After Rockingham's death, theDuke of Portland became the head of the Rockingham Whig party.

Election	Leader	Seats	+/–	Position	Government
Split fromunited Whigs
1768	The Marquess of Rockingham	N/A		2nd	Minority
1774	The Marquess of Rockingham	215 / 558	N/A	2nd	Minority
1780	The Marquess of Rockingham	254 / 558	39	2nd	Minority
Succeeded byPittites

• 1765 establishments in Great Britain
• 1784 disestablishments in Great Britain
• Whig factions
• Politics of the Kingdom of Great Britain
• Defunct political parties in the United Kingdom
• Charles Watson-Wentworth, 2nd Marquess of Rockingham
• Political parties disestablished in the 18th century
• William Cavendish, 4th Duke of Devonshire

• Use dmy dates from January 2021
• Articles with short description
• Short description is different from Wikidata