Konstantin the Armless

Konstantin, nicknamed the Armless, was prince of Polotsk in the 1250s and later prince of Vitebsk; one scholarly tradition makes him a son of Briachislav Vasilkovich. His nickname appears in the Instruction of Simeon, bishop of Polotsk. While ruling Polotsk he ceded Latgale lands to the Livonian Order, and late in the 1250s he lost the city to Tovtivil.

A possibly different Prince Konstantin campaigned against Yuryev in 1262 and Rakovor in 1268 and appears last in 1292, treating with the crusaders as an envoy of Grand Prince Dmitry of Vladimir.