Salikoko Mufwene is a linguist born in Mbaya-Lareme in the Democratic Republic of the Congo.
 He is the Frank J. McLoraine Distinguished Service Professor of linguistics at the University of Chicago.
 He has worked extensively on the development of creole languages, especially Gullah and Jamaican Creole, on the morphosyntax of Bantu languages, especially Kituba, Lingala, and Kiyansi (which he speaks natively), and on African American Vernacular English.
 He has also published several articles and chapters about language evolution.
 Mufwene received his Ph.D. in linguistics from the University of Chicago in 1979.
Julien Klener is a Belgian linguist born in Ostend, Belgium in 1939.
Elias Riggs (November 19, 1810 – January 17, 1901) was an American Presbyterian missionary and linguist born in New Providence, New Jersey.
 During his missionary activities in the Ottoman Empire he contributed greatly to the Bulgarian National Revival, and organized the first translation (by Neofit Rilski), and worked on editing, printing and dissemination of a translation of the Bible into modern Bulgarian.
 Riggs did research on Chaldee Language, and also guided the translation of the Bible into modern Armenian language.
Tsutomu Miura (三浦 つとむ , Miura Tsutomu , 1911 - October 27, 1989) was a Japanese linguist born in Tokyo.
Franz Skutsch (6 January 1865 – 29 September 1912) was a German classical philologist and linguist born in Neisse.
 He was the father of classical philologist Otto Skutsch (1906-1990).
Hermann Günther Grassmann (German: "Graßmann" ; April 15, 1809 – September 26, 1877) was a German polymath, known in his day as a linguist and now also as a mathematician.
 He was also a physicist, neohumanist, general scholar, and publisher.
 His mathematical work was little noted until he was in his sixties.
Samuel Petrus Kleinschmidt ( 27 February 1814 i; † 8.
 February 1886) was a German/Danish missionary linguist born in Greenland known for having written extensively about the Greenlandic language and having invented the orthography used for writing this language from 1851 to 1973.
 He also translated parts of the Bible into Greenlandic.
Joseph Aquilina, LL.D., Ph.D. (7 April 1911 – 8 August 1997) was a Maltese author and linguist born in Munxar.
Grassmann's law, named after its discoverer Hermann Grassmann, is a dissimilatory phonological process in Ancient Greek and Sanskrit which states that if an aspirated consonant is followed by another aspirated consonant in the next syllable, the first one loses the aspiration.
 The descriptive version was described for Sanskrit by Pāṇini.
Richard Carl Meister (July 27, 1848 – November 30, 1912) was a German classical scholar and linguist born in Dresden.
 He specialized in the field of Greek dialects.

Question: Grassmann's law is named after a linguist born in which year ?
Answer: 1809