Черниговское княжество
Together with other East Slavic tribes, Severians participated in the Oleg's campaign against Constantinople in 907. In the 10th century, in his "De Administrando Imperio", Constantine VII wrote that in winter, the Rus princes ("archontes") moved to and were maintained in the lands of their Severian and Krivich tributaries. Eventually, Severian territory became part of the Grand Principality of Chernigov, and the last reference to them is from 1024, when they are mentioned as part of the troops recruited by Mstislav of Chernigov for his "druzhina". They had a significant impact on the victory at the Battle of Listven (1024), especially against the Varangians.