The Sebbirozi was a tribe mentioned by the 9th-century Bavarian Geographer . It states that the Sebbirozi inhabit 90 settlements (Sebbirozi habent civitates XC).[1]
Linguist Aleksander Brückner related Sebbirozi with another tribe from the source, Zabrozi, deriving from Proto-Polish *sebr (Old Polish siebr and siabr, or szabr), transcribing to what he believed as true names *sebracy and *siabracy.[2] Historian Henryk Łowmiański and linguist Stanisław Rospond connected the ethnonym to the Severians,[3] [4] while the others to the Sabirs.[5] More recently, Krzysztof Tomasz Witczak also treats the Sebbirozi as one of the five Turkic tribes from the source, precisely the Sabirs.[4] Already in 1958 Łowmiański considered etymological and geographical relation between the Sebbirozi, Attorozi, Uuillerozi, Zabrozi, Chozirozi due to unusual non-Slavic, yet Turkic suffix -rozi. The Attorozi themselves are described as populus ferocissimus.[6]
. Aleksander Brückner. Studja staropolskie: księga ku czci Aleksandra Brücknera. 1928. Nakł. Krakowskiej spólki wydawniczej. pl. 54–55.