Kazimieras Jaunius was a Lithuania

Lithuania

Lithuania , officially the Republic of Lithuania is a country in Northern Europe, the biggest of the three Baltic states. It is situated along the southeastern shore of the Baltic Sea, whereby to the west lie Sweden and Denmark...

n priest and linguist

Linguistics

Linguistics is the scientific study of human language. Linguistics can be broadly broken into three categories or subfields of study: language form, language meaning, and language in context....

. He started his studies in linguistics

Linguistics

Linguistics is the scientific study of human language. Linguistics can be broadly broken into three categories or subfields of study: language form, language meaning, and language in context....

 in the end of 19th century in Kaunas

Kaunas

Kaunas is the second-largest city in Lithuania and has historically been a leading centre of Lithuanian economic, academic, and cultural life. Kaunas was the biggest city and the center of a powiat in Trakai Voivodeship of the Grand Duchy of Lithuania since 1413. During Russian Empire occupation...

. While Jaunius did not publish much, his major achievements include research on the similarity of Lithuanian

Lithuanian language

Lithuanian is the official state language of Lithuania and is recognized as one of the official languages of the European Union. There are about 2.96 million native Lithuanian speakers in Lithuania and about 170,000 abroad. Lithuanian is a Baltic language, closely related to Latvian, although they...

 to other languages and the systematization of research of Lithuanian dialect

Dialect

The term dialect is used in two distinct ways, even by linguists. One usage refers to a variety of a language that is a characteristic of a particular group of the language's speakers. The term is applied most often to regional speech patterns, but a dialect may also be defined by other factors,...

s. He collaborated with Jan Niecisław Baudouin de Courtenay and Jonas Basanavičius

Jonas Basanavicius

Jonas Basanavičius was an activist and proponent of Lithuania's National Revival and founder of the first Lithuanian language newspaper Aušra. He was one of the initiators and the Chairman of the Organizing Committee of the 1905 Congress of Lithuanians, the Great Seimas of Vilnius...

.

His famous disciple is Kazimieras Būga

Kazimieras Buga

Kazimieras Būga was a Lithuanian linguist and philologist. He was a professor of linguistics, who mainly worked on the Lithuanian language.He was born at Pažiegė, near Dusetos, then part of the Russian Empire...

, who from 1903 worked as Jaunius' personal secretary. Būga collected most of Jaunius' work, who was known not to be keen to write his thoughts down. Būga prepared four volumes of Jaunius' writings for print.