Wolfgang Amadeus Mozart, (baptized as Johannes Chrysostomus Wolfgangus Theophilus Mozart), was born January 27, 1756, Salzburg, archbishopric of Salzburg [now Austria]— and died December 5, 1791, Vienna, Austria.

After supervising a performance of his new opera “La Clemenza di Tito” in Prague, he began to feel ill. He returned to Vienna and grew progressively worse while working on a commissioned Requiem. He took to bed on November 20, suffering from swelling, pain, and vomiting and virtually never got up again. Mozart died on December 5 at 1 am. The cause of death was recorded as “severe miliary fever".

Despite his fame, he was buried in a common grave at St. Marx Cemetery. Both actions were the Viennese custom at the time, for only aristocrats and nobility enjoyed public mourning and were allowed to be buried in marked individual graves. After his death, his wife Constanze sold unpublished manuscripts to pay off the family’s large debts and got a pension from the Emperor.

At the time of his death, the Mozart family lived in Rauhensteingasse (which means "Rough Stone Alley"), Number 4, a block from the main shopping street of Vienna, the Neuermarkt and two blocks from St. Stephen's Cathedral. The house was demolished in 1849. At the spot, there is now a leather goods shop called “The World of Mozart”. On the wall is a plaque placed in 1927 with the legend which translated says: “On this spot until 1849 stood the house where Mozart died”.

More Info: en.wikipedia.org