David J. Bradley (born 1949) was one of the twelve engineers who worked on the original IBM PC, developing the computer's ROM BIOS code. He is most famous for inventing the "Control-Alt-Delete" (also known as three-finger salute) key combination that was used to reboot the computer.

David Bradley (born April 17, 1942) is an English character actor. He has recently become known for playing the caretaker of Hogwarts, Argus Filch, in the Harry Potter series of films.

Bradley was born in York, England. He became an actor in 1971, first appearing on television that year in the successful comedy Nearest and Dearest playing a police officer. He was awarded a Laurence Olivier Theatre Award in 1991 for his supporting actor role in King Lear at the Royal National Theatre. He has appeared in a production of Harold Pinter's The Caretaker.

Bradley starred in BBC comedy series Wild West as Jake. He played fictional Labour MP Eddie Wells in the award-winning BBC Two serial Our Friends in the North in 1996. Other television appearances include the 2004 musical drama serial Blackpool on BBC One, in 2006 playing the father of Sweeney Todd opposite Ray Winstone on the BBC drama, and a small part in a 2006 episode of Taggart. Also in 2006 he played a leading character Tom, in an episode of "Midsummer Murders." He also appears as the character Stemroach in the BBC comedy series Ideal and as Electric in the BBC's Thieves Like Us, and in the BBC1 series True Dare Kiss.

Bradley had a small part in the 2007 comedy film Hot Fuzz as a farmer who illegally hoarded weapons including a sea mine which later proves important to the story.

He is the active President of Second Thoughts Drama Group in Stratford-upon-Avon.

He will be playing Cohen the Barbarian in a Sky One adaptation of The Colour of Magic by Terry Pratchett; Sir David Jason will be playing the part of Rincewind.

He will be starring in a movie callied The Daisy Chain as Sean Cryan. Movie is currently in post production.

He lives in Stratford-upon-Avon.

David Shedd Bradley (6 April 1920 - 19 December 1997) was an American motion picture director, actor, film collector, and university instructor.

Bradley was born to a wealthy Chicago family that founded the Shedd Aquarium. He attended the Todd School for Boys (from which Orson Welles had graduated in 1931) from 1935 to 1937, and Lake Forest Academy during 1937-1940. He then spent a year at the Goodman Memorial Theatre Drama Department of the Art Institute of Chicago. During this time, he also directed a feature-length 16 mm version of Peer Gynt with 17-year-old Charlton Heston in the title role.

His studies at Northwestern University were interrupted by three years’ service in the U.S. Army Signal Corps during World War II. He graduated in 1950 with Bachelor of Science degree from the university’s School of Speech. On the basis of the 16 mm feature Julius Caesar that he had produced and directed in Chicago, he was hired as a directing intern by Metro-Goldwyn-Mayer in 1950. He went on to direct the infamous They Saved Hitler's Brain, which proved to be his final output.

David Bradley (November 8, 1811 - February 19, 1899) was a "Pioneer Plowman".

David Bradley was born in Groton, New York on November 8th, 1811. After working with his brother, C. C. Bradley, for several years in Syracuse, he relocated to Chicago in 1835. Initially he was in the employ of Jones, King & Co. and helped to build the first foundry in Chicago, known as the "Chicago Furnace".

From the late 1830's until the 1850's David Bradley farmed in Lake County, Illinois, made bricks, and later farm machinery, in Racine, Wisconsin, and was a lumberman in Michigan. In 1854, he returned to Chicago and purchased a plow company from his brother in law. Later that year he partnered with Conrad Furst to create the firm of Furst and Bradley.

Furst and Bradley eventually grew to occupy an entire city block at Fulton and Desplaines Streets in Chicago. In 1884 David Bradley and his sons purchased Furst's share of the business, and the company was renamed the "David Bradley Manufacturing Company".

In 1895 the company was relocated to North Kankakee (about 50 miles south of Chicago), which was later renamed "Bradley, Illinois" in honor of the man and the company.

David Bradley died on February 19th, 1899.

In 1910, the Bradley family sold the factory to Sears, Roebuck and Company, at which time it was renamed the "David Bradley Manufacturing Works". Sears operated the factory until 1962, when it was sold to the Newark Ohio company. Between 1910 and 1962 many of the farm and garden related items sold by Sears carried the trade name "David Bradley".

Most of the factory in Bradley was destroyed by fire in 1986.

On 25 Feb 1838 in Chicago, David Bradley married Cynthia Abbott (1817-1895) of Barre, Vermont. They had six children:

i. Byron Chapman Bradley, b. 1 May 1839 Libertyville, Lake County, IL, of Kankakee, IL, m. Alice M. Wilbur.

ii. Edgar Bradley, b. 15 Jan 1841 Libertyville, IL; d. there 18 Sep 841.

iii. Mary Ellen Bradley, b. 14 Sep 1842 Racine, WI; of Chicago, IL; d. 1 Oct 1899 Mt. Vernon, Westchester County, NY; m. Chicago 10 Oct 1865 George Cadogen Morgan (1834/35- ).

iv. Joseph Harley Bradley, b. 30 Sep 1844 Racine, WI; of Chicago, IL; m. Brooklyn, NY 1 Mar 1871 Margina J. Richards (c1846-1896) of New York, NY.

v. Adelbert Bradley, b. 15 Apr 1847 Racine, WI; d. there Sep 1848.

vi. David Bradley, b. 15 Feb 1849 Chicago, IL; d. there 15 Feb 1849.

(Genealogy from "Descendants of George Abbott of Rowley, Mass.", L. A. Abbott, 1906.)

David Bradley is an American actor and martial artist, known for starring in numerous low-budget action movies beginning in the late 1980s. His best-known films are the American Ninja sequels.

David Bradley (born 1950 in Bedford, Pennsylvania) is an American writer. His most acclaimed work is his second novel, The Chaneysville Incident (1981). He currently teaches creative writing at the University of Oregon.

An ex-Karate champion, he became a star after becoming the 2nd American Ninja in The American Ninja Part 3, also returning in parts 4 and 5.

He was awarded the Laurence Olivier Theatre Award in 1991 (1990 season) for Best Actor in a Supporting Role for "King Lear" at the Royal National Theatre.

Became an actor in 1971.