* 1812 – British forces under the command of the Duke of Wellington assault the fortress of Badajoz.

* 1812 – Alexander Herzen, Russian writer ( d. 1870 )

* 1812 – The Territory of Orleans becomes the 18th U. S. state under the name Louisiana.

* 1812 – Kaspar Hauser, German mystery boy ( d. 1833 )

* 1812 – Bertalan Szemere, Hungarian politician ( d. 1869 )

* 1812 – War of 1812: The Battle of Fort Dearborn is fought between United States troops and Potawatomi at what is now Chicago, Illinois.

* 1812 – War of 1812: American General William Hull surrenders Fort Detroit without a fight to the British Army.

* 1812 – War of 1812: American frigate defeats the British frigate off the coast of Nova Scotia, Canada earning her nickname " Old Ironsides ".

He was one of the founders of the Geological Society of London in 1807 and was its honorary secretary in 1812 – 1817.

Andrew Johnson was born in Raleigh, North Carolina, to Jacob Johnson ( 1778 – 1812 ) and Mary (" Polly ") McDonough ( 1783 – 1856 ), a seamstress and the daughter of Andrew McDonough.

* 1812 – Peninsula War: A coalition of Spanish, British, and Portuguese forces succeed in lifting the two-and-a-half-year-long Siege of Cádiz.

* Alfonso Sanz y Martínez de Arizala ( 28 January 1880, Madrid – 1970 ), married in 1922 to María de Guadalupe de Limantour y Mariscal ( d. 1977, Marbella ), daughter of Julio de Limantour y Marquet ( 17 June 1863, Mexico City – 11 October 1909, Mexico City ) and wife Elena Mariscal y ..., paternal granddaughter of French Joseph Yves de Limantour y Rence de la Pagame ( 1812, Ploemeur – 1885, Mexico City ) and wife Adèle Marquet y Cabannes ( 1820, Bordeaux –?

* 1768 – Joseph Dennie, American author and journalist ( d. 1812 )

* 1812 – Agoston Haraszthy Hungarian-American traveler, writer, and winemaker, founded Buena Vista Winery ( d. 1869 )

* 1812 – Peninsular War: French troops engage British-Portuguese forces in the Battle of Majadahonda.

* 1748 – Joseph Schuster, German composer ( d. 1812 )

* 1813 – War of 1812: United States troops capture the capital of Upper Canada in the Battle of York ( present day Toronto, Canada ).

* Principality of Anhalt-Bernburg-Schaumburg-Hoym: 1718 – 1812

* 1815 – War of 1812: American frigate, commanded by Commodore Stephen Decatur, is captured by a squadron of four British frigates.

* 1812 – War of 1812: The American frigate,, commanded by Stephen Decatur, captures the British frigate.

* 1812 – War of 1812: Battle of Queenston Heights – As part of the Niagara campaign in Ontario, Canada, United States forces under General Stephen Van Rensselaer are repulsed from invading Canada by British and native troops led by Sir Isaac Brock.

* October 13 – War of 1812 – Battle of Queenston Heights: As part of the Niagara campaign in Ontario, Canada, United States forces under General Stephen Van Rensselaer are repulsed from invading Canada by British and native troops led by Sir Isaac Brock ( he dies during the battle ).

* Jeremiah Olney ( 1749 – 1812 ), Continental Army soldier and older brother of Stephen Olney

This county is named after naval hero Stephen Decatur, Jr., who gained national recognition in the Barbary Wars and the War of 1812 by his leadership and achievements at sea.

It is named for the Navy war hero Commodore Stephen Decatur, Jr., who served during the Barbary Wars and the War of 1812.

This county is named for Stephen Decatur, Jr., a hero in the War of 1812.

It was named for Commodore Stephen Decatur, Jr., naval officer in the First and Second Barbary Wars, and in the War of 1812.

Decatur County is named for United States Navy Commodore Stephen Decatur, a hero of the War of 1812.

The town was named in recognition of Stephen Swain, the state senator who introduced the bill for the county's creation in 1812.

Stephen Pearl Andrews ( March 22, 1812 – May 21 1886 ) was an American individualist anarchist and author of several books on Individualist anarchism.

* Stephen Hopkins-Brigadier General, War of 1812 / Battle of New Orleans, Louisiana House Speaker ( 1812 )

Decatur Township and the Village of Decatur are named after Stephen Decatur, Jr., celebrated as a hero of the War Village of 1812.

Decatur Township and the Village of Decatur are named after Stephen Decatur, Jr., celebrated as a hero of the War Village of 1812.

* Stephen Decatur ( 1779 – 1820 ), naval officer notable for his heroism in the Barbary Wars and in the War of 1812.

Decatur is named after Commodore Stephen Decatur, Jr., an early 19th-century American naval officer renowned for his exploits in the Barbary Wars and the War of 1812.

* The first USS Macedonian ( 1810 ) was a 38-gun sailing frigate, originally HMS Macedonian of the Royal Navy, captured by Stephen Decatur in the War of 1812.

* Heidler, David Stephen and Heidler, Jeanne T. " Creek War ," in Encyclopedia of the War of 1812, Santa Barbara, Calif.: ABC-CLIO, 1997.

He convinced Rensselaer Van Rensselaer ( nephew of Stephen Van Rensselaer III, an American colonel during the War of 1812 ) to join in a scheme whereby volunteers would invade Upper Canada from Navy Island in the Niagara River.

Stephen Russell Mallory ( 1812 – November 9, 1873 ) served in the United States Senate as, Senator ( Democrat ) from Florida from 1850 to the secession of his home state and the outbreak of the American Civil War.

Andrews was born in Templeton, Massachusetts on March 22, 1812, " the youngest of eight children of the Reverend Elisha Andrews and his wife, Ann Lathrop.

Tennant's brother, meanwhile, had failed in business, and the poet became in 1812 schoolmaster of the parish of Dunino, near St Andrews.