Context: the monastery of Saints Boris and Gleb
The community in which Martin served and was later tonsured was dedicated to Saints Boris and Gleb, the sons of Prince Vladimir of Kiev who were killed in 1015 and venerated as passion-bearers for refusing to resist violence with violence. They were among the first saints glorified in Rus', and their cult was widespread in the twelfth through fourteenth centuries.
Martin's appeal to Boris and Gleb in his sickness reflects this devotion: the princes were invoked as protectors and healers, and the account of Martin's relief is preserved as one expression of their veneration in the region of Turov.