Explanation: William Grenville's first cousin was William Pitt the Younger, not Lord Sidmouth. Lord Sidmouth was a political figure who later joined Grenville's ministry, but he was not his first cousin.

Explanation: William Grenville received his education at Eton College, Christ Church, Oxford, and Lincoln's Inn, not exclusively at Cambridge University.

Explanation: William Grenville's father, George Grenville, was a Whig politician and served as Prime Minister, not a Tory.

Explanation: William Grenville was indeed born on October 25, 1759, in Wotton Underwood, Buckinghamshire, England.

Explanation: William Grenville commenced his parliamentary career by entering the House of Commons in February 1782, representing the borough of Buckingham.

Explanation: William Grenville's first cousin was William Pitt the Younger, a prominent political figure of the era.

Explanation: William Grenville's education included Eton College, Christ Church at Oxford, and Lincoln's Inn. Trinity College, Cambridge, is not listed as an institution he attended.

Explanation: William Grenville's father, George Grenville, was a prominent Whig politician.

Explanation: William Grenville's maternal grandfather, Sir William Wyndham, was a prominent figure within the Tory political tradition.

Explanation: William Grenville made his entry into the British House of Commons in the year 1782.

Explanation: Upon his initial entry into the House of Commons, William Grenville represented the borough of Buckingham.

Explanation: William Grenville served as Home Secretary from June 1789 to June 1791. From 1784 to 1789, he held the position of Paymaster of the Forces.

Explanation: William Grenville held the significant cabinet position of Home Secretary from June 5, 1789, to June 8, 1791.

Explanation: The resignation of Grenville and Pitt the Younger in 1801 was primarily precipitated by King George III's opposition to Catholic emancipation, an issue Grenville strongly supported.

Explanation: William Grenville served as a Major in the Buckinghamshire Yeomanry cavalry starting in 1794. In 1806, he held the rank of lieutenant-colonel in the South Buckinghamshire volunteer regiment.

Explanation: Following William Pitt the Younger's resignation in 1804, William Grenville allied with Charles James Fox and chose not to join Pitt's subsequent administration.

Explanation: Lord Grenville, along with Lord Grey, criticized the Peninsular War during his period in opposition following his premiership.

Explanation: Between 1784 and 1789, William Grenville occupied the government position of Paymaster of the Forces.

Explanation: Grenville served as Speaker of the House of Commons for a specific period, from January 5, 1789, to June 5, 1789.

Explanation: From June 1789 to June 1791, William Grenville held the significant cabinet position of Home Secretary.

Explanation: The primary catalyst for the resignation of Grenville and Pitt the Younger in 1801 was King George III's refusal to sanction Catholic emancipation.

Explanation: Following William Pitt the Younger's resignation in 1804, William Grenville formed an alliance with the prominent Whig leader, Charles James Fox.

Explanation: During his opposition period after his premiership, Lord Grenville, in conjunction with Lord Grey, expressed criticism of the Peninsular War.

Explanation: Contrary to this statement, Grenville advocated for focusing military efforts on Continental Europe, whereas Henry Dundas favored naval and colonial warfare.

Explanation: In 1797, Grenville's stance on peace negotiations conflicted with William Pitt the Younger's views. Grenville favored continuing the war unless the Bourbons were restored, while Pitt sought more direct peace discussions.

Explanation: Grenville was instrumental in constructing and sustaining Allied coalitions, notably by negotiating alliances with powers such as Russia and the Austrian Empire.

Explanation: Grenville's faction advocated for concentrating military efforts on Continental Europe as the primary theater for achieving victory during the French Revolutionary Wars.

Explanation: In 1797, Grenville's position was that peace negotiations should only proceed if the Bourbons were restored to the French throne, a stance that differed from Pitt the Younger's more flexible approach.

Explanation: Grenville actively managed Allied coalitions by attending to smaller members and negotiating alliances, such as those with Russia and the Austrian Empire.

Explanation: William Grenville held the office of Prime Minister from February 11, 1806, to March 25, 1807, leading the coalition known as the "Ministry of All the Talents."

Explanation: The abolition of the slave trade in 1807 is widely regarded as the most significant legislative achievement of Lord Grenville's government.

Explanation: Historical accounts indicate that Lord Grenville's government was unsuccessful in negotiating peace with France and also failed to secure Catholic emancipation.

Explanation: The coalition government formed under William Grenville's leadership in 1806 was indeed widely referred to as the "Ministry of All the Talents."

Explanation: The "Ministry of All the Talents" was indeed a coalition formed by Grenville's adherents, the Whigs aligned with Charles James Fox, and the political faction led by Lord Sidmouth.

Explanation: The roles were reversed: Lord Grenville served as First Lord of the Treasury, and Charles James Fox held the position of Foreign Secretary within the Ministry of All the Talents.

Explanation: Upon the death of Charles James Fox in September 1806, Lord Howick assumed the roles of Foreign Secretary and Leader of the House of Commons.

Explanation: From February 1806 to March 1807, William Grenville served as the Prime Minister of the United Kingdom.

Explanation: The abolition of the slave trade in 1807 stands as the most significant legislative achievement enacted during Lord Grenville's government.

Explanation: Lord Grenville's premiership was marked by key policy failures, including the inability to secure peace with France and the failure to achieve Catholic emancipation.

Explanation: The coalition government led by Lord Grenville, comprising his supporters, the Foxite Whigs, and Lord Sidmouth's adherents, was commonly known as the "Ministry of All the Talents."

Explanation: The "Ministry of All the Talents" comprised Grenville's supporters, the Foxite Whigs, and the political faction aligned with former Prime Minister Lord Sidmouth.

Explanation: In the "Ministry of All the Talents," Lord Grenville served as First Lord of the Treasury, and Charles James Fox held the position of Foreign Secretary.

Explanation: Following the death of Charles James Fox in September 1806, Lord Howick assumed the roles of Foreign Secretary and Leader of the House of Commons.

Explanation: Thomas Erskine, 1st Baron Erskine, served as the Lord Chancellor within the Ministry of All the Talents.

Explanation: Lord Grenville died in 1834 at the age of 74, but he died in Burnham, Buckinghamshire, not his birthplace of Wotton Underwood.

Explanation: As William Grenville died without surviving heirs, the barony of Grenville became extinct upon his death in 1834.

Explanation: The motto associated with Lord Grenville's coat of arms was "Repetens exempla suorum," which translates to "Following the example set by our forebears."

Explanation: In 1790, William Grenville was elevated to the peerage, acquiring the title Baron Grenville of Wotton under Bernewood, which granted him a seat in the House of Lords.

Explanation: A severe stroke suffered in 1823 effectively marked the end of Lord Grenville's active political career, although he continued in his role as Chancellor of Oxford University.

Explanation: William Grenville held the distinguished position of Chancellor of the University of Oxford from 1810 until his passing in 1834.

Explanation: Dropmore House was built for Lord Grenville in the 1790s, but he had known the location since his school days at Eton College, not university days at Oxford.

Explanation: By his death, Lord Grenville had cultivated a pinetum at Dropmore House featuring the largest collection of conifer species in Britain, not oak species.

Explanation: Lord Grenville's marriage to Anne Pitt was indeed childless, which resulted in the extinction of the barony of Grenville upon his death.

Explanation: William Grenville was elevated to the peerage in 1790, receiving the title Baron Grenville.

Explanation: Lord Grenville's political career was effectively concluded in 1823 due to the debilitating effects of a severe stroke.

Explanation: From 1810 until his death in 1834, William Grenville served as the Chancellor of the University of Oxford.

Explanation: By the time of his death, Lord Grenville had developed a significant pinetum at Dropmore House, which housed the largest collection of conifer species in Britain.

Explanation: In 1792, Lord Grenville married Anne Pitt, who was the daughter of Thomas Pitt, 1st Baron Camelford.

Explanation: The childless nature of Lord Grenville's marriage resulted in the extinction of the barony of Grenville upon his death.

Explanation: In 1819, Grenville advocated for the implementation of repressive measures in response to the distress and discontent observed in manufacturing districts.