Title: Pittsburgh Steelers
Content:  The Pittsburgh Steelers of the NFL first took to the field as the Pittsburgh Pirates on September 20, 1933, losing 23–2 to the New York Giants. Through the 1930s, the Pirates never finished higher than second place in their division, or with a record better than .500. Pittsburgh did make history in by signing Byron White, a future Justice of the U.S. Supreme Court, to what was at the time the biggest contract in NFL history, but he played only one year with the Pirates before signing with the Detroit Lions. Prior to the 1940 season, the Pirates renamed themselves the Steelers. During World War II, the Steelers experienced player shortages. They twice 
Title: Sports in Pittsburgh
Content:  a future Hall of Fame pitcher with the New York Giants and Fred Crolius, and outfielder with Pirates. The team won the league's only championship in 1902. In 1933, as the oldest of nine children Art Rooney, who had been raised on the North Side of Pittsburgh, founded the Pittsburgh Steelers. Originally nicknamed the Pirates, the team later changed their name to the Steelers, to represent the city's heritage of producing steel. The Steelers' first season with a winning record came in 1942. However, they lost their first playoff game in 1947. In 1969, the Steelers hired head coach Chuck Noll who strategically drafted players in order to improve 
Title: 1933 Pittsburgh Pirates (NFL) season
Content:  The 1933 Pittsburgh Pirates was the debut season of the team that eventually became the Pittsburgh Steelers. The team was founded after Pennsylvania relaxed its blue laws that, prior to 1933, prohibited sporting events from taking place on Sundays, when most NFL games took place. The new squad was composed largely of local semi-pro players, many of whom played for sports promoter Art Rooney. Rooney became the Pirates owner, paying the NFL a $2,500 fee to join the league. Except for a brief period in 1940 and '41, Rooney would remain the franchise's principal owner until his death in 1988. The Rooney family has retained a controlling interest ever since. The team took the field for the first time on September 20 against the New York Giants at Forbes Field, losing 23–2. The following week, the team got its first win, defeating the Chicago Cardinals at home 14–13. The team finished 3–6–2 for the season.
Title: History of the Pittsburgh Steelers
Content:  In May 1933, in anticipation of the repeal of some of Pennsylvania's restrictive laws in the fall of that year, Rooney applied for a franchise with the NFL. His request was granted on May 19, 1933, and the Pittsburgh Professional Football Club, Inc. joined the NFL in exchange for a US$2,500 franchise fee (roughly $0 in today's dollars). The new team was known as the Pirates in reference to their baseball club landlords at Forbes Field. Before settling on Forbes, Rooney considered playing at Greenlee Field, which housed the city's Negro league baseball club. Since the blue laws were not repealed until November's general election, the team was forced to play its first four home games on Wednesday nights. Rooney's new team was a study in frustration for many years: between 1933 and 1971, they posted a winning record only eight times, with a further six seasons at .500, and made the playoffs just once, in 1947, when they were shut out by Philadelphia.
Title: American football in Western Pennsylvania
Content:  included several of the era's top players, such as: Herman Kerchoff, Arthur McFarland, Clark Schrontz, Paul Steinberg, Pop Sweet, Eddie Wood, and coach Blondy Wallace. Other early professional football teams from western Pennsylvania include; the McKeesport Olympics, Oil City Athletic Club, Pitcairn Quakers and Glassport Odds. In 1933, as the oldest of nine children Art Rooney, who had been raised on the North Side of Pittsburgh, founded the Pittsburgh Steelers. Originally nicknamed the Pirates, the team later changed their name to the Steelers, to represent the city's heritage of producing steel. The Steelers' first season with a winning record came in 1942. However, they lost their first playoff game in 1947.
Title: Steeler Nation
Content:  The Steelers have had a following in Western Pennsylvania since 1933. That year, Pennsylvania relaxed its blue laws allowing sporting events in the commonwealth on Sundays, paving the way for the Steelers and the Philadelphia Eagles to begin play for the 1933 NFL season. Previously, the state had teams in Pottsville and Frankford, but both had already folded, due to both the Great Depression and their inability to play on Sunday, when most NFL games took place. Much like the league itself in the early years, the Steelers had to compete with baseball and college football teams in the city, making the team third in the hierarchy to the Pittsburgh Pirates and the Pitt Panthers. Despite the team's early struggles, it had a small but loyal fan base in the city due to the popularity of American football at all levels, dating back to the 1800s, when Pittsburgh hosted the first wholly professional football game in 1895.
Title: Pittsburgh
Content:   The city's professional team, NFL's Pittsburgh Steelers, is named after the distribution company the Pittsburgh Steeling company established in 1927. News of the team has preempted news of elections and other events, and are important to the region and its diaspora. The Steelers have been owned by the Rooney family since the team's founding in 1933, show consistency in coaching (only three coaches since the 1960s all with the same basic philosophy) and are noted as one of sports' most respectable franchises. The Steelers have a long waiting list for season tickets, and have sold out every home game since 1972. The team won four Super Bowls in a six-year span in the 1970s, a fifth Super Bowl in 2006, and a league record sixth Super Bowl in 2009. Since the 
Title: Eagles–Steelers rivalry
Content:  Both teams were officially founded in 1933, with the Steelers then being known as the Pittsburgh Pirates. However, their histories predate that, with the Steelers being known as the J.P. Rooneys dating to 1921 as a semipro team, while the Eagles are arguably descended from the Frankford Yellow Jackets based in Philadelphia's Frankford neighborhood dating to 1899. The NFL considers both teams having started in 1933 alongside the now-defunct Cincinnati Reds. Both teams took advantage of Pennsylvania relaxing their blue laws in 1933 that previously didn't allow sporting events on Sundays, when most NFL games took place. The blue laws, combined with general issues related to The Great Depression, were among the reasons the Yellow Jackets failed despite winning the NFL champsionship in 1926. The first meeting 
Title: History of the Pittsburgh Steelers
Content:  The Pittsburgh Steelers are an American football franchise representing Pittsburgh. They are the seventh-oldest club in the National Football League (NFL), which they joined in. The only surviving NFL teams with a longer history are the Chicago Bears, Chicago (Arizona as well as St. Louis) Cardinals, Detroit Lions (then the Portsmouth Spartans), Green Bay Packers, New York Giants and Boston (Washington) Redskins. The Philadelphia Eagles joined the league concurrently with the Steelers in 1933. The team was founded by Arthur J. "Art" Rooney. The Rooney family has held a controlling interest in the club for almost its entire history. Since its founding the team has captured six league championships and competed in more than a thousand games. In the Steelers became the first NFL team to capture six Super Bowl titles. Currently the club is fourth in total NFL Championships behind the Packers (13), Bears (9), and Giants (8). Eighteen Steelers players, coaches or administrators have been enshrined in the Pro Football Hall of Fame.
Title: Pittsburgh Steelers
Content:  In 2001, the Steelers moved into Heinz Field. The franchise dating back to 1933 has had several homes. For 31 seasons, the Steelers shared Forbes Field with the Pittsburgh Pirates from 1933 to 1963. In 1958, though they started splitting their home games at Pitt Stadium three blocks away at the University of Pittsburgh. From 1964 to 1969, the Steelers played exclusively at the on-campus facility before moving with the Pirates to Three Rivers Stadium on the city's Northside. Three Rivers is remembered fondly by the Steeler Nation as where Chuck Noll and Dan Rooney turned the franchise into a powerhouse, winning four Super Bowls in just six seasons and making the playoffs 11 times in 13 seasons from 1972 to 1984, the AFC title game seven times. Since 2001 however a new generation of Steeler greats has made Heinz Field legendary with multiple AFC Championship Games being hosted and two Super Bowl championships.

Question: who founded the pittsburgh steelers in 1933?
Answer: Rooney family.