Editing 1818 (section)

=== July–December ===
[[File:Emily Brontë by Patrick Branwell Brontë restored.jpg|thumb|110px|right|[[Emily Brontë]]]]
[[File:Hermann Kolbe2.jpg|thumb|110px|right|[[Adolph Wilhelm Hermann Kolbe]]]]
[[File:Joule James sitting.jpg|thumb|110px|right|[[James Prescott Joule]]]]
* [[July 1]] – [[Ignaz Semmelweis]], Hungarian physician, obstetrician (d. [[1865]])
* [[July 18]] – [[Louis Gerhard De Geer]], 1st Prime Minister of Sweden (d. [[1896]])
* [[July 22]] – [[J. Gregory Smith]], Vermont governor (d. [[1891]])
* [[July 27]] – [[Agostino Roscelli]], Italian priest, founder of the Institute of Sisters of the Immaculata (d. [[1902]])
* [[July 30]]
** [[Emily Brontë]], British novelist (d. [[1848]])<ref>{{cite web |title=Emily Bronte {{!}} Biography, Works, & Facts |url=https://www.britannica.com/biography/Emily-Bronte |website=Encyclopedia Britannica |access-date=17 April 2019 |language=en}}</ref>
** [[Jan Heemskerk]], 2-time prime minister of the Netherlands (d. [[1897]])
* [[August 11]] – [[Méry von Bruiningk]], Estonian democrat (d. [[1853]]) 
* [[August 25]] – [[Shiv Dayal Singh]], Founder and first SatGuru of RadhaSoami Faith (d. [[1878]]) 
* [[September 1]] – [[José María Castro Madriz]], first [[President of Costa Rica]], founder of the republic (d. [[1892]])
* [[September 12]] – [[Richard Jordan Gatling]], American inventor, gunsmith (d. [[1903]]) 
* [[September 27]] – [[Adolph Wilhelm Hermann Kolbe]], German chemist (d. [[1884]])
* [[October 8]] – [[John Henninger Reagan]], American Confederate politician (d. [[1905]])
* [[October 12]] – [[Maximilian Cercha]], Polish painter and drawer (d. [[1907]])
* [[October 15]] – [[Irvin McDowell]], American general (d. [[1885]])
* [[October 18]] – [[Francis Dutton]], Germany-born [[Premier of South Australia]] (d. [[1877]])
* [[November 5]] – [[Benjamin Butler (politician)|Benjamin Franklin Butler]], American lawyer, politician, and general (d. [[1893]])
* [[November 9]] ([[October 28]] (O.S.)) – [[Ivan Turgenev]], Russian writer (d. [[1883]])
* [[November 23]] – [[József Szlávy]], 6th Prime Minister of Hungary (d. [[1900]])
* [[November 29]] – [[George Brown (Canadian politician)|George Brown]], Canadian politician (d. [[1880]])
* [[December 13]] – [[Mary Todd Lincoln]], [[First Lady of the United States]] (d. [[1882]])
* [[December 18]] – [[Max Joseph von Pettenkofer]], German chemist and hygienist (d. [[1901]])
* [[December 24]] – [[James Prescott Joule]], English physicist (d. [[1889]])<ref>{{cite DNB|wstitle=Joule, James Prescott|first=Richard Tetley |last=Glazebrook|volume=30}}</ref>
* [[December 27]] – [[J. Lawrence Smith (chemist)|J. Lawrence Smith]], American chemist (d. [[1883]])