Latgalian language
Originally Latgalians were a tribe living in modern Vidzeme and Latgale. It is thought that they spoke the Latvian language, which later spread through the rest of modern Latvia, absorbing features of the Old Curonian, Semigallian, Selonian and Livonian languages. The Latgale area became politically separated during the Polish–Swedish wars, remaining part of the Polish–Lithuanian Commonwealth as the Inflanty Voivodeship, while the rest of Latvians lived in lands dominated by Baltic German nobility. Both centuries of separate development and the influence of different prestige languages likely contributed to the development of modern Latgalian as distinct from the language spoken in Vidzeme and other parts of Latvia.
Latgalians (modern)
Latgalians continued to publish books and periodicals abroad. Publishing in Latgalian in Latvia resumed during the Third National Awakening in the late 1980s but is still rare. The Latgalian language is mostly used at home in rural areas and Latvian is overwhelmingly used in official use and in urban areas. Some government protection for the Latgalian language is provided by the language law of 2000 which states that "the State shall ensure the maintenance, protection and development of the Latgalian written language as a historic variant of the Latvian language.."