* 1856 – William Martin Conway, English art critic and mountaineer ( d. 1937 )

One of the earliest group automorphisms ( automorphism of a group, not simply a group of automorphisms of points ) was given by the Irish mathematician William Rowan Hamilton in 1856, in his Icosian Calculus, where he discovered an order two automorphism, writing:

* 1856 – William Willett, English builder and daylight saving time advocate ( d. 1915 )

* 1856 – Battle of Rivas: Juan Santamaria burns down the hostel where William Walker's filibusters are holed up.

In 1856, William Walker, an American filibuster began incursions into Central America.

The first human-made ( synthetic ) organic dye, mauveine, was discovered serendipitously by William Henry Perkin in 1856.

* 1856 – Thaddeus William Harris, American naturalist ( b. 1795 )

* 1915 – William Willett, English campaigner for daylight saving time ( b. 1856 )

Initially invited by the Liberals in 1855 to join their struggle against the Conservatives, a United States adventurer named William Walker declared himself king in 1856.

* 1795 – Thaddeus William Harris, American naturalist ( d. 1856 )

* 1799 – William Sprague III, American politician ( d. 1856 )

< tr >< td > 1 < td > William Champ < td >< td > 1 November 1856 < td > 26 February 1857

In 1856, under the direction of Postmaster General James Campbell, Toppan and Carpenter, ( commissioned by the U. S. government to print U. S. postage stamps through the 1850s ) purchased a rotary machine designed to separate stamps, patented in England in 1854 by William and Henry Bemrose, who were printers in Derby, England.

The first synthetic organic dye, mauveine, was discovered by William Henry Perkin in 1856 while he was attempting to synthesize quinine.

In 1856, Anthony further attempted to unify the African-American and women's rights movements when, recruited by abolitionist Abby Kelley Foster, she became an agent for William Lloyd Garrison's American Anti-Slavery Society of New York.

William Morris self-portrait, 1856

* April 19 – William Martin Conway, British art critic and mountaineer ( b. 1856 )

* March 4 – William Willett, English promoter of daylight saving time ( b. 1856 )

* September 7 – Alfred William Rich, English watercolour painter ( born 1856 )

* May 10 – William Massey, Prime Minister of New Zealand ( b. 1856 )

* November 27 – The Coup of 1856 leads to Luxembourg's unilateral adoption of a new, reactionary constitution, as King-Grand Duke William III signs the new constitution without the Chamber of Deputies ' consent.

* November 12 – Thaddeus William Harris, American naturalist ( d. 1856 )

The term " Occam's razor " first appeared in 1852 in the works of Sir William Hamilton, 9th Baronet ( 1788 – 1856 ), centuries after Ockham's death.

* Mary Ellen, ( 1856 – 1908 ) who married the mathematician and author Charles Howard Hinton and had four children: George ( 1882 – 1943 ), Eric (* 1884 ), William ( 1886 – 1909 ) and Sebastian ( 1887 – 1923 ) inventor of the Jungle gym.

Founded in 1856 by James Alexander Holden, in 1885 the establishment combined with the carriage builder Henry Frost to become Holden & Frost.

* James Henry Monk ( 1784 – 1856 ), English divine and classical scholar

< tr bgcolor ="# FFFFFF ">< td > 3 < td > Henry Parker < td >< td > 3 October 1856 < td > 7 September 1857

His siblings were Blanch ( 1846 – 1935 ), Viola ( 1848 – 1925 ), Rose ( b. 1854 ), Henry ( 1856 – 1926 ) and Eliza ( 1860 – 1941 ).

Louis Henry Sullivan ( September 3, 1856 – April 14, 1924 ) was an American architect, and has been called the " father of skyscrapers " and " father of modernism " He is considered by many as the creator of the modern skyscraper, was an influential architect and critic of the Chicago School, was a mentor to Frank Lloyd Wright, and an inspiration to the Chicago group of architects who have come to be known as the Prairie School.

* 1856 – William Henry Perkin invents the first synthetic dye.

Coal tar was subsequently used to produce the first synthetic dye, mauve, by William Henry Perkin in 1856 and in 1853 was found, by Charles Gerhardt to contain the chemical acetylsalicylic acid, now known as aspirin.

( John Henry Bufford | John Bufford after William L. Champey, circa 1856 )

* Henry Morgan ca. 1856

Between 1839 and 1856 the newsagent and future First Lord of the Admiralty William Henry Smith lived in a house to the west of Kilburn High Road.

Some say it is named after Henry Lix who received a land patent on January 3, 1856 ; others claim it is named after Louis W. Lix, the first postmaster of the office that existed from November 25, 1895-April 15, 1945.

Hubert Austin ( 1868 ), George Frederick Bodley ( 1845 – 56 ), Charles Buckeridge ( 1856 – 57 ), Somers Clarke ( 1865 ), William Henry Crossland (?

), C. Hodgson Fowler ( 1856 – 60 ), Thomas Gardner ( 1856 – 61 ), Thomas Graham Jackson ( 1858 – 61 ), John T. Micklethwaite ( 1862 – 69 ), Benjamin Mountfort ( 1841 – 46 ), John Norton ( 1870 – 78 ), George Gilbert Scott, Jr. ( 1856 – 63 ), John Oldrid Scott ( 1858 – 78 ), J. J. Stevenson ( 1858 – 60 ), George Henry Stokes ( 1843 – 47 ), George Edmund Street ( 1844 – 49 ), William White ( 1845 – 47 ).

In 1856, Mr. Brown along with M. C. Dickey, Loring Farnsworth and Henry Fox pre-empted for the purpose of a town.

The post office was established as Slaughtersville on January 29, 1856, with Henry A. Prater, postmaster.

In 1856 Henry McShane, an immigrant from Ireland, established the McShane Bell Foundry on the banks of the Patapsco River in the then far southeastern outskirts of Baltimore.

The name was changed to De Tour on July 25, 1856, when a new postmaster, Henry A. Williams, assumed office.

( Portions of a diary written by Henry McLafferty Jr ( 1819 – 1859 ) are available online from the Rochester Public Library: Romulus Revisited: Extracts from the Diary of Henry McLafferty, Jr. 1856 – 1857 ).