Question: The 1820 UK general election produced the first parliament under the reign of the King from what house?

Context paragraphs:
United Kingdom general election, 1830: The 1830 United Kingdom general election, was triggered by the death of King George IV and produced the first parliament of the reign of his successor, William IV.  Fought in the aftermath of the Swing Riots, it saw electoral reform become a major election issue.  Polling took place in July and August and the Tories won a plurality over the Whigs, but division among Tory MPs allowed Earl Grey to form an effective government and take the question of electoral reform to the country the following year.

George IV of the United Kingdom: George IV (George Augustus Frederick; 12 August 1762 – 26 June 1830) was King of the United Kingdom of Great Britain and Ireland and of Hanover following the death of his father, George III, on 29 January 1820, until his own death ten years later.  From 1811 until his accession, he served as Prince Regent during his father's final mental illness.

Laurence Ginnell: Laurence Ginnell (baptised 9 April 1852 – 17 April 1923) was an Irish nationalist politician, lawyer and Member of Parliament (MP) of the House of Commons of the United Kingdom of Great Britain and Ireland as member of the Irish Parliamentary Party for Westmeath North at the 1906 UK general election.  From 1910 he sat as an Independent Nationalist and at the 1918 general election he was elected for Sinn Féin.

1st Parliament of Ontario: The 1st Parliament of Ontario was in session from September 3, 1867, until February 25, 1871, just prior to the 1871 general election.  This was the first session of the Legislature after Confederation succeeding the Legislative Assembly of the Province of Canada (last session was the 8th Parliament of the Province of Canada).  The 1867 general election produced a tie between the Conservative Party led by John Sandfield Macdonald and the Liberal Party led by Archibald McKellar.  Macdonald led a coalition government with the support of moderate Liberals.

United Kingdom general election, 1820: The 1820 UK general election was triggered by the death of King George III and produced the first parliament of the reign of his successor, George IV.  It was held shortly after the Radical War in Scotland and the Cato Street Conspiracy.  In this atmosphere, the Tories under the Earl of Liverpool were able to win a substantial majority over the Whigs.

Mark Reckless: Mark John Reckless (born 6 December 1970) is an English politician and a Member of the National Assembly for Wales, representing South Wales East.  Having been elected a member of the Assembly representing UKIP in 2016, he renounced his UKIP membership in April 2017 and joined the Conservative group in the Welsh Assembly.  He was previously elected as the Conservative Member of Parliament for Rochester and Strood in the 2010 general election, joined UKIP in September 2014, won re-election as a UKIP member in November 2014, but lost his seat to the Conservatives in the May 2015 UK general election.

British general election, 1761: The British general election, 1761, returned members to serve in the House of Commons of the 12th Parliament of Great Britain to be summoned, after the merger of the Parliament of England and the Parliament of Scotland in 1707.  This was the first Parliament chosen after the accession to the throne of King George III.  It was also the first election after George III had lifted the conventional proscription on the employment of Tories in government.  The King prevented the Prime Minister, the Duke of Newcastle, from using public money to fund the election of Whig candidates, but Newcastle instead simply used his private fortune to ensure that his ministry gained a comfortable majority.

Baseball Hall of Fame balloting, 2009: Elections to the Baseball Hall of Fame for 2009 proceeded according to revised rules enacted in 2001 and further revamped in 2007.  The Baseball Writers Association of America (BBWAA) held an election to select from among recent players.  In keeping with the 2007 rules changes, the Veterans Committee held an election for players who were active in the years 1943 to 1987, but not before or after that period; for the fourth consecutive election cycle, this election produced no selections.  An election to select from among players who were active prior to 1943 was conducted by a separate Veterans Committee panel of 12 Hall of Famers, writers, and baseball historians, chosen by the Hall of Fame's Board of Directors, and this election produced the first Veterans Committee selection since .  An election to select managers, umpires and executives was held for the inductions; the next such election was held prior to the inductions.

United Kingdom general election, 1837: The 1837 United Kingdom general election was triggered by the death of King William IV and produced the first parliament of the reign of his successor, Queen Victoria.  It saw Robert Peel's Conservatives close further on the position of the Whigs, who won their fourth election of the decade.

Anne McLaughlin: Anne McLaughlin (born 8 March 1966) is an SNP member and was the Member of Parliament (MP) for Glasgow North East from 2015 to June 2017.  She was a Member of the Scottish Parliament (MSP) for Glasgow between 2009 and 2011.  In the 2015 UK General Election she won the Glasgow North East constituency for the SNP from the Labour Party candidate Willie Bain, with a swing of 39%, breaking the electoral record for the biggest swing in a General Election.  She lost her seat to Scottish Labour Paul Sweeney on 8 June 2017.

Supporting paragraphs: United Kingdom general election, 1820 George IV of the United Kingdom
Answer: Hanover