After three months of intense work, he predicted a position for Ceres in December 1801 — just about a year after its first sighting — and this turned out to be accurate within a half-degree when it was rediscovered by Franz Xaver von Zach on 31 December at Gotha, and one day later by Heinrich Olbers in Bremen.

* 1709 – Franz Xaver Richter, Austro-Moravian singer, violinist, composer, conductor and music theoretician ( d. 1789 )

Portrait of Maximilian I of Mexico, by Franz Xaver Winterhalter

* 1675 – Franz Xaver Josef von Unertl, Bavarian politician ( d. 1750 )

* 1736 – Franz Xaver Messerschmidt, German-Austrian sculptor ( d. 1783 )

* 1789 – Franz Xaver Gabelsberger, German inventor of the stenography ( d. 1849 )

There are two comprehensive editions of Palestrina's works: a 33 volume edition published by Breitkopf and Härtel, in Leipzig Germany between 1862 and 1894 edited by Franz Xaver Haberl, and a 34 volume edition published in the mid twentieth century, by Fratelli Scalera, in Rome, Italy edited by R. Casimiri and others.

* 1663 – Franz Xaver Murschhauser, German composer and theorist ( d. 1738 )

* 1791 – Franz Xaver Wolfgang Mozart, Austrian composer ( d. 1844 )

Among these were Johann Nepomuk Hummel, Ignaz Moscheles, Josef Weigl ( 1766 – 1846 ), Ludwig-Wilhelm Tepper de Ferguson ( 1768after 1824 ), Antonio Casimir Cartellieri, Ludwig van Beethoven, and Franz Xaver Wolfgang Mozart.

* 1850 – Franz Xaver Scharwenka, Polish-German pianist and composer ( d. 1924 )

* 1787 – Franz Xaver Gruber, Austrian organist ( d. 1863 )

One of his professors was Franz Xaver Heller ( 1775 – 1840 ), author of the (" Flora of the Grand Duchy of Würzburg ", 1810 – 1811 ).

* Franz Xaver Seppelt, Geschichte der Päpste ( Munich 1955 ) 2: 414 – 417.

Solomon considers his three closest friends to have been Gottfried von Jacquin, Count August Hatzfeld, and Sigmund Barisani ; others included his older colleague Joseph Haydn, singers Franz Xaver Gerl and Benedikt Schack, and the horn player Joseph Leutgeb.

* July 26 – Franz Xaver Wolfgang Mozart, Austrian composer and pianist ( d. 1844 )

* December 24 – Silent Night composed by Franz Xaver Gruber and Josef Mohr.

** Franz Xaver Kroetz, German dramatist

* March 27 – Franz Xaver von Baader, German philosopher and theologian ( d. 1841 )

* June 4 – Franz Xaver, Baron Von Zach, German scientific editor and astronomer ( d. 1832 )

* Franz Xaver, Baron Von Zach, an astronomer, publishes The Tables of the Sun, an essential early work for navigation.

* May 23 – Franz Xaver von Baader, German philosopher and theologian ( b. 1765 )

* July 29 – Franz Xaver Wolfgang Mozart, Austrian composer ( b. 1791 )

* September 17 – Franz Xaver Süssmayr, Austrian composer ( b. 1766 )

* September 2 – Franz Xaver, Baron von Zach, Austrian scientific editor and astronomer ( b. 1754 )

A concerto in D major for basset clarinet was written for Stadler by Franz Xaver Süssmayr, which remains as two incomplete manuscripts.

* September 17 – Franz Xaver Süssmayr, composer ( born 1766 )

* Franz Xaver Süssmayr – Concerto Movement in D major for Basset Horn

A completion by Franz Xaver Süssmayr was delivered to Count Franz von Walsegg, who had anonymously commissioned the piece for a requiem Mass to commemorate the February 14 anniversary of his wife's death.

Franz Xaver Süssmayr was born in 1766 ( the exact date is lost ) in Schwanenstadt in upper Austria.

Finally, on 17 September 1803, Franz Xaver Süssmayr died from the complications of tuberculosis himself

Slighted, ignored and then forgotten, Franz Xaver Süssmayr is as close to a non-entity as a composer can come.

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# redirect Franz Xaver Süssmayr

Franz Xaver Süssmayr, best known for completing Mozart's unfinished Requiem, also composed several Turkish works, including operas and symphonies.

38, which is a set of variations on the Austrian Folkslied A Schisserl und a Reindl, is åll mein Kuchlg ' schirr, used in the play Der Kaufmannsbude ( 1796 ), with music by Johann Baptist Henneberg ( 1768 – 1822 ) and text by Schikaneder ; and in the play Der Marktschreyer ( 1799 ), with music by Franz Xaver Süssmayr ( 1766 – 1803 ) and text by Friedrich Karl Lippert.

In this context it is worth noting two other works written for Stadler and his instrument by composers closely linked to the Mozart – Stadler circle that used the extended range of Stadler's instrument: the clarinet concerto by Franz Xaver Süssmayr ( famous for having completed Mozart's Requiem ) and that by Joseph Leopold Eybler.

Although Mozart died before completing the requiem, Mozart's wife arranged for several other composers, most notably Franz Xaver Süssmayr, to complete the work in order to gain the remainder of the sum Walsegg had promised.

# REDIRECT Franz Xaver Süssmayr

These included collaborations with other composers of the time: Der Spiegel von Arkadien with Mozart's assistant Franz Xaver Süssmayr, Der Tyroler Wastel with Mozart's posthumous brother-in-law Jakob Haibel, and a Magic Flute sequel called Das Labyrinth, with Peter von Winter.

Grand heroic-comic opera, music by Franz Xaver Süssmayr.