The Dominion of Prentioch represented a splinter group led by an Imperial Warlord. This faction came into being around 4 ABY, following the Battle of Endor, and was founded by Moff Utoxx Prentioch.
The territorial holdings of Prentioch's Dominion encompassed Utoxx Prentioch's original sector, known as the Sombure sector, along with various star systems located in adjacent sectors, notably the Wornal sector.