paragraph_text: Luise Willer (1888–1970) was a German operatic contralto. She made her professional opera debut in 1910 as Annius in Wolfgang Amadeus Mozart's "La clemenza di Tito". She spent most of her career performing at the Bavarian State Opera in Munich. At the Bayreuth Festival, she portrayed Brängane in "Tristan und Isolde". She created roles in several world premieres during her career, including Barbara in Erich Wolfgang Korngold's "Violanta" (1916), Lukrezia in Hans Pfitzner's "Palestrina" (1917), Graben-Liese in Franz Schreker's "Das Spielwerk" (1920), and Herzogin in Pfitzner's "Das Herz" (1931) among others.

paragraph_text: Franz Xaver von Wegele (29 October 1823 in Landsberg am Lech – 17 October 1897 in Würzburg) was a German historian, largely known for his studies on the history of Thuringia, Franconia and the University of Würzburg.

paragraph_text: Franz Xaver Wolfgang Mozart (26 July 1791 – 29 July 1844), also known as Wolfgang Amadeus Mozart, Jr., was the youngest child of six born to Wolfgang Amadeus Mozart and his wife Constanze. He was the younger of his parents' two surviving children. He was a composer, pianist, conductor, and teacher from the late classical period whose musical style was of an early Romanticism, heavily influenced by his father's mature style.

paragraph_text: Franz Xaver Gruber (25 November 1787 – 7 June 1863), was an Austrian primary school teacher, church organist and composer in the village of Arnsdorf, who is best known for composing the music to "Stille Nacht" ("Silent Night").

paragraph_text: Joseph Lange (Würzburg, 1 April 1751 – Vienna, 17 September 1831) was an actor and amateur painter of the 18th century. Through his marriage to Aloysia Weber, he was the brother-in-law of Wolfgang Amadeus Mozart.

paragraph_text: Mildred Horn was a film critic and screenwriter, best known for her work on the Kroger Babb exploitation film "Mom and Dad".

paragraph_text: Franz Xaver Pecháček (4 July 1793 in Vienna – 15 September 1840 in Karlsruhe) was an Austrian-German violin virtuoso and composer of Bohemian origin. Besides polonaises, variations, Rondos and potpourris for violin and orchestra, he composed two string quartets and the "Adagio et Polonaise" for clarinet and orchestra.

paragraph_text: "Don't Look a Smith Horse in the Mouth" is the tenth episode of the sixth season of "American Dad!". It aired on January 3, 2010 on Fox and was the first "American Dad!" episode to air in 720p high-definition.

paragraph_text: The best - known composers from this period are Joseph Haydn, Wolfgang Amadeus Mozart, Ludwig van Beethoven, and Franz Schubert; other notable names include Luigi Boccherini, Muzio Clementi, Antonio Salieri, Leopold Mozart, Johann Christian Bach, Carl Philipp Emanuel Bach, and Christoph Willibald Gluck. Ludwig van Beethoven is regarded either as a Romantic composer or a Classical period composer who was part of the transition to the Romantic era. Franz Schubert is also a transitional figure, as were Johann Nepomuk Hummel, Luigi Cherubini, Gaspare Spontini, Gioachino Rossini, and Carl Maria von Weber. The period is sometimes referred to as the era of Viennese Classic or Classicism (German: Wiener Klassik), since Gluck, Mozart, Haydn, Salieri, Schubert, and Beethoven all worked in Vienna.

paragraph_text: Wolfgang Amadeus Mozart was born on 27January 1756 to Leopold Mozart (1719–1787) and Anna Maria, née Pertl (1720–1778), at 9 Getreidegasse in Salzburg. This was the capital of the Archbishopric of Salzburg, an ecclesiastic principality in what is now Austria, then part of the Holy Roman Empire. He was the youngest of seven children, five of whom died in infancy. His elder sister was Maria Anna Mozart (1751–1829), nicknamed "Nannerl". Mozart was baptised the day after his birth, at St. Rupert's Cathedral in Salzburg. The baptismal record gives his name in Latinized form, as "Joannes Chrysostomus Wolfgangus Theophilus Mozart". He generally called himself "Wolfgang Amadè Mozart" as an adult, but his name had many variants.

paragraph_text: Franz Xaver Nagl S.T.D. (26 November 1855 – 4 February 1913) was a Cardinal of the Roman Catholic Church and Archbishop of Vienna as well as Titular Latin Archbishop of Tyre.

paragraph_text: Wolfgang Amadeus Mozart completed his Symphony No. 41 in C major, K. 551, on 10 August 1788. The longest and last symphony that he composed, it is regarded by many critics as among the greatest symphonies in classical music.

paragraph_text: Alan Haines (6 June 1924 – 17 April 2011) was a British actor and playwright who spent four years in the Royal Navy during World War II — including at D-Day on his 20th birthday and appeared in many West End shows and touring productions, as well as in the cult TV series Dad's Army and Van der Valk and two notable films: "Dad's Army" and "The Man in the White Suit", and the acclaimed BBC TV Series "Perfect Strangers".

paragraph_text: Scattering Dad is a 1998 American made-for-television drama film directed by Joan Tewkesbury and starring Olympia Dukakis and Andy Griffith. It aired on CBS on January 4, 1998.

paragraph_text: Wolfgang Amadeus Mozart (/ ˈwʊlfɡæŋ æməˈdeɪəs ˈmoʊtsɑːrt / MOHT - sart; German: (ˈvɔlfɡaŋ amaˈdeːʊs ˈmoːtsaʁt); 27 January 1756 -- 5 December 1791), baptised as Johannes Chrysostomus Wolfgangus Theophilus Mozart, was a prolific and influential composer of the Classical era.

paragraph_text: Wolfgang Amadeus Mozart's six sonatas for keyboard with accompaniment of violin (or flute) and cello, K. 10–15 were composed in late 1764 in London during the Mozart family's grand tour of Europe. Queen Charlotte (the wife of King George III) commissioned them on 25 October and the works were dedicated on 18 January 1765. They were published as Mozart's "Opus III" by his father Leopold at 20 Frith Street, Soho, London, where the Mozarts lived from September 1764 until after May 1765.

paragraph_text: American Dad! is an American animated sitcom created by Seth MacFarlane, Mike Barker, and Matt Weitzman for the Fox Broadcasting Company. American Dad! is the first television series to have its inception on Animation Domination. The series premiere aired on February 6, 2005, following Super Bowl XXXIX, three months before the rest of the first season aired as part of the Animation Domination block, commencing on May 1, 2005.

paragraph_text: Mozart's birthplace (German: ' or ') was the birthplace of Wolfgang Amadeus Mozart at No. 9 Getreidegasse in Salzburg, Austria. The Mozart family resided on the third floor from 1747 to 1773. Mozart himself was born here on 27 January 1756. He was the seventh child of Leopold Mozart, who was a musician of the Salzburg Royal Chamber.

paragraph_text: Wolfgang Amadeus Mozart's Piano Sonata No. 6 in D major, K. 284 / 205b, (1775) is a sonata in three movements:

paragraph_text: Wolfgang Amadeus Mozart's String Quartet No. 15 in D minor, K. 421/417b is the second of the Quartets dedicated to Haydn and the only one of the set in a minor key. Though undated in the autograph, it is believed to have been completed in 1783, while his wife Constanze Mozart was in labour with her first child Raimund. Constanze stated that the rising string figures in the second movement corresponded to her cries from the other room.

Question: Who was the father, of the dad of Franz Xaver Wolfgang Mozart?
Answer: Leopold Mozart