The Grimms' Fairy Tales, originally known as the Children's and Household Tales ( Kinder- und Hausmärchen, pronounced [ˌkɪndɐ ʔʊnt ˈhaʊsmɛːɐ̯çən]), is a collection of fairy tales by the Grimm brothers or "Brothers Grimm", Jakob and Wilhelm, first published on 20 December 1812. The first edition contained 86 stories, and by the seventh edition in 1857, had 211 unique fairy tales
German philologist and folklorist Jakob Ludwig Karl Grimm in 1822 formulated Grimm's Law, the basis for much of modern comparative linguistics. With his brother Wilhelm Karl Grimm (1786-1859), he collected Germanic folk tales and published them as Grimm's Fairy Tales (1812-1815).
Indo-European stop consonants, represented in Germanic, underwent the regular changes that Grimm's Law describes; this law essentially states that Indo-European p shifted to Germanic f, t shifted to th, and k shifted to h. Indo-European b shifted to Germanic p, d shifted to t, and g shifted to k. Indo-European bh shifted to Germanic b, dh shifted to d, and gh shifted to g.