Latgalian (latgalīšu volūda, ) is an Eastern Baltic language belonging to the Baltic branch often spoken in Latgale, the eastern part of Latvia. Nevertheless, its standardized form is recognized and protected as a "historical language of Latvia" (vēsturiska valoda Latvijā) under national law. The 2011 Latvian census established that 8.8% of Latvia's inhabitants, or 164,500 people, speak Latgalian daily. 97,600 of them live in Latgale, 29,400 in Riga and 14,400 in the Riga Planning Region. History 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 the 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. The modern Latgalian literary tradition started to develop in the 18th century from vernaculars spoken by Latvians in the eastern part of Latvia. The first surviving book published in Latgalian is "Evangelia toto anno" (Gospels for the whole year) in 1753. The first systems of orthography were borrowed from Polish and used Antiqua letters. It was very different from the German-influenced orthography, usually written in Blackletter or Gothic script, used for the Latvian language in the rest of Latvia. Many Latgalian books in the late 18th and early 19th century were authored by Jesuit priests, who came from various European countries to Latgale as the north-eastern outpost of the Roman Catholic religion; their writings included religious literature, calendars, and poetry. Publishing books in the Latgalian language along with the Lithuanian was forbidden from 1865 to 1904. The ban on using Latin letters in this part of the Russian Empire followed immediately after the January Uprising, where insurgents in Poland, Lithuania, and Latgale had challenged the czarist rule. During the ban, only a limited number of smuggled Catholic religious texts and some hand-written literature were available, e.g. calendars written by the self-educated peasant Andryvs Jūrdžys. After the repeal of the ban in 1904, there was a quick rebirth of the Latgalian literary tradition; first newspapers, textbooks, and grammar