Editing 1834 (section)

== Deaths ==

=== January–June ===
[[File:Friedrich Daniel Ernst Schleiermacher.jpg|thumb|right|110px|[[Friedrich Schleiermacher]]]]
[[File:Gilbert du Motier Marquis de Lafayette.PNG|thumb|right|110px|[[Gilbert du Motier, Marquis de Lafayette|Gilbert du Motier]]]]
* [[January 6]] – [[Richard Martin (Irish politician)|Richard Martin]], Irish founder of the Society for the Prevention of Cruelty to Animals (b. [[1754]])
* [[January 12]] – [[William Grenville, 1st Baron Grenville]], [[Prime Minister of the United Kingdom]] (b. [[1759]])
* [[January 17]] – [[Giovanni Aldini]], Italian physicist (b. [[1762]])
* [[February 2]] – [[Lorenzo Dow]], American minister (b. [[1777]])
* [[February 4]] – [[Amélie-Julie Candeille]], French composer, librettist, writer, singer, actress, comedian, and instrumentalist (b. [[1767]])
* [[February 12]] – [[Friedrich Schleiermacher]], German theologian and philosopher (b. [[1768]])
* [[February 18]] – [[William Wirt (Attorney General)|William Wirt]], 9th [[United States Attorney General]] (b. [[1772]])
* [[February 23]] – [[Karl Ludwig von Knebel]], German poet (b. [[1744]])
* [[March 2]] – [[José Cecilio del Valle]], first President of Central America (b. [[1780]])
* [[March 30]] – [[Rudolph Ackermann]], Anglo-German entrepreneur (b. [[1764]])
* [[April 5]] – Vice-Admiral Sir [[Richard Goodwin Keats]], Governor of Newfoundland (b. [[1757]])
* [[April 10]] – [[John Macarthur (wool pioneer)|John 'Merino' MacArthur]], Australian farmer (b. [[1767]])
* [[April 11]] – [[John 'Mad Jack' Fuller]], English philanthropist, patron of the arts and sciences (b. [[1757]])
* [[April 29]] – [[Grigore IV Ghica]], prince of Wallachia (b. [[1755]])
* [[May 9]] – [[Turki bin Abdullah bin Muhammad]], founder of the First Saudi State
* [[May 20]] – [[Gilbert du Motier, Marquis de Lafayette]], French nobleman, soldier (b. [[1757]])
* [[May 31]] – Shaikh Khalifa bin Salman bin Ahmed Al Khalifa, Deputy Ruler of Bahrain (b. {{circa}} [[1783]])

=== July–December ===
[[File:SamuelTaylorColeridge.jpg|thumb|right|110px|[[Samuel Taylor Coleridge]]]]
[[File:JonathanJennings.jpg|thumb|right|110px|[[Jonathan Jennings]]]]
[[File:Portrait of Dom Pedro, Duke of Bragança - Google Art Project edited.jpeg|thumb|right|110px|[[Pedro I of Brazil]]]]
* [[July 12]] – [[David Douglas (botanist)|David Douglas]], Scottish botanist (b. [[1799]])
* [[July 14]] – [[Edmond-Charles Genêt]], French ambassador to the United States during the French Revolution (b. [[1763]])
* [[July 19]] –  [[Károly Hadaly]], Hungarian mathematician (b. [[1743]])
* [[July 25]] – [[Samuel Taylor Coleridge]], English writer (b. [[1772]])
* [[July 26]] – [[Jonathan Jennings]], American politician and the first [[governor of Indiana]] (b. [[1784]])
* [[August 1]] – [[Robert Morrison (missionary)|Robert Morrison]], British Protestant missionary to China (b. [[1782]])
* [[August 7]] – [[Joseph Marie Jacquard]], French inventor (b. [[1752]])
* [[August 17]] – [[Husein Gradaščević]], Bosnian rebel leader (b. [[1802]])
* [[September 2]] – [[Thomas Telford]], Scottish engineer (b. 1757)
* [[September 5]] – [[Thomas Lee (1794–1834)|Thomas Lee]], English architect (b. [[1794]])
* [[September 9]] – [[James Weddell]], Antarctic explorer (b. [[1787]])
* [[September 15]] – [[William H. Crawford]], American politician, judge (b. [[1772]])
* [[September 16]] – [[William Blackwood]], Scottish writer (b. [[1776]])
* [[September 24]] – Emperor [[Pedro I of Brazil]] (b. [[1798]])
* [[October 5]] – [[María Josefa Pimentel, Duchess of Osuna]] (b. [[1752]])
* [[October 8]] – [[François-Adrien Boieldieu]], French composer (b. [[1775]])
* [[October 11]] – [[William Napier, 9th Lord Napier]], British Navy officer, politician and diplomat (b. [[1786]])
* [[October 21]] – [[Edward Smith-Stanley, 12th Earl of Derby]] (b. [[1752]])
* [[October 23]] – [[Fath Ali Shah Qajar]], King of Iran (b. [[1772]])
* [[October 31]] – [[Éleuthère Irénée du Pont]], French-American chemical manufacturer (b. [[1771]])
* [[November 2]] – [[Maria Teresa Poniatowska]], Polish aristocrat (b. [[1760]])
* [[November 27]] – [[:fr:Rosalie de Constant|Rosalie de Constant]], Swiss naturalist (b. [[1758]])
* [[December 23]] – [[Thomas Malthus]], English economist, political philosopher (b. [[1766]])
* [[December 27]] – [[Charles Lamb]], English essayist (b. [[1775]])
* [[December 31]] – João Batista Gonçalves Campos, intellectual leader of the [[Cabanagem]] revolt (b. [[1782]])