Question: Which of the creators of Ferb Fletcher was born born December 9, 1960?
Context: Thomas Brodie-Sangster (born 16 May 1990), also credited as Thomas Sangster, is an English actor and musician, known for his roles as Jojen Reed in "Game of Thrones", his voice as Ferb Fletcher in "Phineas and Ferb", as John Tracy in the ITV series "Thunderbirds Are Go", as well as his roles as Sam in Richard Curtis' "Love Actually" and Newt in the "Maze Runner" film series.  Sangster also grew in popularity for starring in critically acclaimed cult films such as "Death of a Superhero", "Bright Star" and as Paul McCartney in "Nowhere Boy".  He also had a cameo in the 2015 film "". George Fletcher Bass (born December 9, 1932 in Columbia, South Carolina) is recognized as one of the early practitioners of underwater archaeology, along with Peter Throckmorton, Honor Frost, and others. Ferbs "Ferb" Fletcher is a British character on the animated television series "Phineas and Ferb."  The character, voiced by British actor Thomas Sangster, was created by "Phineas and Ferb" co-founders Dan Povenmire and Jeff "Swampy" Marsh and first appeared in the show's pilot episode, "Rollercoaster." Jeff "Swampy" Marsh (born December 9, 1960) is an American animator, writer, director, producer, and voice actor associated with several animated television series, most notably as the co-creator, executive producer, and voice of Major Monogram of Disney's animated series "Phineas and Ferb".  Marsh was born in Santa Monica, California, where he grew up with a heavily blended family dynamic.  Marsh has been and continues to be a driving force behind several animation projects, working for over six seasons on the animated television series "The Simpsons".  Marsh continued to work on other animated television series, including "King of the Hill" and "Rocko's Modern Life," before moving to England in 1996. David Pfeffer (born April 11, 1982) is a German singer.  He rose to fame during the second series of the German "X Factor" show, which he won in December 2011.  David Pfeffer, who is also a police officer in Duisburg, Germany, released his debut album "I Mind" on December 9, 2011 which entered the German charts at No.20.  The album, "I Mind" includes Pfeffer's single "I'm Here", which also was released on the same day as the album, December 9, 2011. Alphonse "Buddy" Fletcher Jr. (born December 19, 1965) is an American former hedge fund manager and founder of the Fletcher Foundation.  He began his career as a quantitative equity trader at Bear Stearns and later worked at Kidder, Peabody & Co. Fletcher, who is African American, sued Kidder Peabody for racial discrimination.  Although his racial discrimination claims were dismissed, he eventually won an arbitration award of US$1.26 million.  Fletcher has also been involved in litigation centered on a dispute with the board of The Dakota apartment building in New York City. George Goodyear (December 9, 1801 – November 18, 1884) was an American clergyman.  He was born in Hamden, Connecticut, December 9, 1801. Thomas Davee (December 9, 1797 – December 9, 1841) was a United States Representative from Maine.  He was born in Plymouth, Massachusetts where he attended the common schools.  Later, he moved to Maine, where he engaged in mercantile pursuits. Dr. William Edward "Butch" Hanford (December 9, 1908 – January 27, 1996) was an American chemist who is best known for developing the modern process to make multipurpose material polyurethane.  Hanford’s most notable discovery occurred while working with fellow chemist Dr. Donald Fletcher Holmes at DuPont.  On June 2, 1942, Hanford was awarded a patent for his process.  Currently, this method is responsible for manufacturing many of the plastics that are used in medicine, the automotive industry, and consumer products.  Hanford’s later accomplishments included the development of the first liquid household detergent and a new kind of ammunition for Winchester-Western Company.  For his work, Hanford was inducted into the National Inventors Hall of Fame in 1991.  The New York Times has noted that Hanford’s developments were "monumental." Lawrence E. Harrison (March 11, 1932 - December 9, 2015) was an American scholar known for his work on international development and being former USAID mission director to various Latin American countries.  He is the past director of the Cultural Change Institute at the Fletcher School, Tufts University, where he also served as an adjunct lecturer.  He is the author of various books and articles, most notably his work with Samuel P. Huntington, "Culture Matters".
Answer: Jeff "Swampy" Marsh