Short answers, pulled from the story.
The Brothers Grimm published their first collection, Kinder- und Hausmärchen (Children's and Household Tales), in 1812. The first volume contained 86 folk tales, and a second volume with 70 additional tales followed in 1814.
Jacob and Wilhelm Grimm were born in Hanau in the Landgraviate of Hesse-Kassel, within the Holy Roman Empire. The family moved to the countryside town of Steinau in 1791, and the brothers later attended school in Kassel before studying at the University of Marburg.
The Brothers Grimm tales have been translated into more than 160 languages. In the United States alone, 120 different editions of Kinder- und Hausmärchen are available for sale.
The Brothers Grimm were dismissed in 1837 after refusing to sign an oath of allegiance demanded by Ernest Augustus, King of Hanover, who had dissolved the Hanoverian parliament. They were part of the group known as the Gottingen Seven, and Jacob was among the three professors deported from Hanover.
No. Despite a widespread reputation for collecting from peasants, many of the Grimms' tales came from middle-class or aristocratic acquaintances. Wilhelm's future wife Dortchen Wild and her family provided stories including "Hansel and Gretel" and "Sleeping Beauty", and several informants were of French Huguenot ancestry.
The Deutsches Worterbuch (German Dictionary) is an ambitious historical dictionary that the Brothers Grimm began in 1838, tracing the history and meaning of every word in the German language. The brothers did not finish it; the first volume was not published until 1854, and the complete 32-volume work was not finished until 1960, nearly a century after Jacob Grimm's death in 1863.