Latvian language
Between 1920 and 1934 Latgalian was used in local government and education in Latgale. Now Latgalian is not used as an official language anywhere in Latvia. It is formally protected by the Latvian Language Law stating that "The Latvian State ensures the preservation, protection and development of the Latgalian literary language as a historical variant of the Latvian language" (§3.4). The law regards Latgalian and Standard Literary Latvian as two equal variants of the same Latvian language. Even though such legal status allows usage of Latgalian in state affairs and education spheres, it still happens quite rarely.