Daniel Klein (; 1609–1666) was a Lutheran pastor and scholar from Tilsit, Duchy of Prussia, who is best known for writing the first grammar book of the Lithuanian language. Klein studied philosophy, theology, Greek and Hebrew in the University of Königsberg. In 1637 he became a Lutheran pastor. In 1653 Klein published the first printed grammar book of the Lithuanian language – Grammatica Litvanica, written in Latin. Klein coined the distinctive Lithuanian letter Ė. He also wrote a Lithuanian dictionary, but it was left unpublished. Klein published collections of Lithuanian hymns (), some of which he wrote himself. Another German, as well an Evangelical Lutheran priest, and an appreciator of the Lithuanian language, who wrote a grammar of the Lithuanian language in German language, Gottfried Ostermeyer, in the 1793 book described Daniel Klein as follows: References External links Danielius Kleinas, Daiva Kšanienė, Mažoji Lietuva The Lithuanian Language, Giedrius Subačius, Institute of the Lithuanian Language Balticists 1609 births 1666 deaths People from Tilsit Linguists from Germany 17th-century German Lutheran clergy Grammarians from Germany History of the Lithuanian language Lithuanian grammar Linguists from Lithuania Lutheran hymnwriters People from the Duchy of Prussia Linguists of Lithuanian University of Königsberg alumni 17th-century hymnwriters