Vladimir marched up the Lyachs and took their cities: Peremyshl, Cherven and other towns, all of which are subject to Rus even to this day.[1]
It is possible that the Lyakhs here are the Poles. Cross argued that Lyakh was the early term for a Polish person.[2] Franklin and Shepard argued that these people are the same as the Ledzanians, mentioned in the 10th century De Administrando Imperio as tributaries of the Rus.[3] Peremyshl may have been one of the Cherven towns captured by the Polish prince Boleslaw I in 1018, towns recaptured by Rus in 1031.[4]
Peremyshl, although originally subordinate to the Principality of Vladimir-in-Volhynia, remained a semi-independent principality into the middle of the 13th century and beyond. Although the details are not always available, it formed part of the orbit of the emerging Principality of Halych. During the conflict between Rostislav Mikhailovich and Daniil Romanovich (formerly its prince), it was one of the former's strongholds; its bishop supported Rostislav, and when Rostislav occupied Halych, he appointed Konstantin of Ryazan to oversee Peremyshl.[10] Peremyshl is known to have been the main fort of Boleslaw-Yuri, King of Rus,[11] going into Polish hands after his death.[12]
Rowell, S. C. (1994), Lithuania Ascending: A Pagan Empire Within East-Central Europe, 1295-1345, Cambridge Studies in Medieval Life and Thought: Fourth Series, Cambridge University Press, ISBN978-0-521-45011-9