Wikipedia
Tzanaria (alternative spellings: Tsanaria, Canaria, Sanaria, Sanaryia) was a historic district in the early medieval Caucasus, lying chiefly in what is now the northwestern corner in Georgia’s region of Mtskheta-Mtianeti.
In the narrow sense of the term, Tzanaria (; aka Tzanar Gorge, წანარეთის ხევი, Tzanaretis Khevi, reduced later simply to Khevi, i.e. gorge) was applied by the medieval Georgian annals to the area around the Darial Pass, inhabited by the Tzanars. This warlike tribe is already known as Sanars to Ptolemy. According to the 8th century Arab historian Masudi, the Tzanars, though Christians, claimed their origin from Nizar b. Maad b. Murad, and then from a branch of the Ukail family. Although this claim is completely rejected by modern scholars, the origins of the Tzanars are still uncertain today. The tribe is sometimes claimed to be an offshoot of Sarmatians. Vladimir Minorsky believes, however, that they were the Nakh-speakers. The modern Circassian historian Amjad Jaimoukha also supports this.
Whatever their origin, the Tzanars seem to have adopted, over the centuries, many features of Georgian culture, including language and religion, being subsequently completely commingled with the Georgian people to form one of its ethnographic groups Mokheves, who were known until recently as Tsans (or Tsons) to the neighbouring Ossetes.
The Tzanars gained prominence during the time when Arabs dominated over the most of the Caucasus. They staged a powerful uprising against the invaders in the 770s and, according to Ya'qubi, requested help from the Byzantines, Khazars and the as-Saqāliba. The rebellious tribe soon became a dominant force in the historical Kakheti region and played a crucial role, circa 787, in the formation of the principality of Kakheti ruled by a prince with the curious title of chorepiscopus. For all practical purposes, the contemporary Arab sources used the word Sanãryia to designate the principality in general. However, the Tzanars seem to have been significantly weakened by the early 9th century, enabling their rival clan of the Gardabanians to install their chief Vache as a chorepiscopus of Kakheti in the 830s. By the end of the 10th century, Tzanaria fell under the kingdom of the Hers whose king John Senekerim adopted the title of King of the Tzanars.
For the later history see Khevi.