1014 – Pope Benedict VIII crowns Henry II Roman German Emperor
1076 – Pope Gregory VII excommunicates Roman Emperor Henry IV
1130 – Jewish Cardinal Pietro Pierleone elected as anti-pope Anacletus II
1803 – Chief Justice John Marshall declares that any act of U.S. Congress that conflicts with the Constitution is void.

1849 – In New York City, James Knox Polk becomes first serving US President to have his photograph taken by Mathew Brady.
1855 – Texas is linked by telegraph to the rest of the United States, with the completion of a connection between New Orleans and Marshall, Texas.
1889 – First train load of fruit (oranges) leaves LA for east
1912 – First US submarines w/diesel engines commissioned, Groton, Ct
1924 – IBM Corporation founded by Thomas Watson
1929 – St Valentine’s Day Massacre in Chicago, 7 gangsters killed, allegedly on Al Capone’s orders
1962 – First lady Jacqueline Kennedy conducts White House tour on TV
1968 – Pennsylvania Railroad/NYC Central merge into Penn Central
1972 – John and Yoko co-host “Mike Douglas Show” for entire week
1978 – First “micro on a chip” patented by Texas Instruments
1989 – The first of 24 satellites of the Global Positioning System are placed into orbit.

Birthdays
1838 – Margaret Knight, inventor notably of the flat-bottomed paper bag.
While living in Springfield, Massachusetts in 1868, Knight invented a machine that folded and glued paper to form the flat-bottomed brown paper bags. She built a wooden model, but needed a iron model to apply for a patent. Charles Annan, who was in the machine shop where her iron model was being built, stole her design and patented the device. Knight filed a successful patent interference lawsuit and was awarded the patent in 1871. With a Massachusetts business partner, Knight established the Eastern Paper Bag Co. and received royalties.
1859 – George Washington Gale Ferris, engineer/inventor (Ferris Wheel)
1911 – Willem J Kolff, Dutch/US internist/inventor (Artificial Kidney)
1913 – Jimmy Hoffa, Teamsters leader who disappeared in 1975
Deaths
270 – St. Valentine marking Valentines Day
1950 – Karl G Jansky, Czech discoverer of cosmic radio sources, dies at 44
1975 – Pelham G Wodehouse, writer (Piccadilly Jim), dies at 93
2003 – Dolly the sheep, first mammal to be cloned from an adult cell dies young from a progressive lung disease at the age of six.
2012 – Dory Previn, American singer-songwriter, dies at 86

Edited from various sources including historyorb.com, wikipedia.com, NYTimes.com and internet searches