The Timočani (also Timochani, or Timochans; Serbian and Bulgarian: Тимочани) were a medieval South Slavic tribe that lived in the territory of present-day eastern Serbia, west of the Timok River, as well as in the regions of Banat, Syrmia and Moesia Superior.
[citation needed] Timočani settled in the Balkans in the 6-7th century in the former Dacia Ripensis province and became later subjects of the Avar Khaganate.
[2] In 818 during the rule of Omurtag of Bulgaria (814-836) they, together with other border tribes of the First Bulgarian Empire, revolted because of an administrative reform of centralization that deprived them of much of their local authority.
[4] They left the Bulgarian society (association, alliance[5]),[6] and together with other Slavic tribes, searched protection from Holy Roman Emperor Louis the Pious in the same year, meeting him at his court at Herstal.
This prompted Omurtag to undertake a boat campaign on the Drava in 827 and invade the lands of the Timočani at Sirmium, successfully imposing Bulgar rule again and appointing local governors.