Background
Previous interactions
Death of Vladimir
Just before Vladimir died, he had sent his son Boris on campaign against the nomads in the south. According to the ''Primary Chronicle'', Sviatopolk seized Kiev while those of Vladimir's retainers who were with Boris on campaign encouraged Boris to take power, an offer Boris refused apparently stating "Be it not for me to raise my hand against my elder brother". In the confusion resulting from the death of Vladimir Sviatopolk was able to seize power in Kiev, as Yaroslav was in the north, Mstislav in the south, Sviatoslav in the Derevlian land, Gleb in Murom and Boris on the aforementioned expedition against the Pechenegs. As Franklin and Shepard put it, Sviatopolk's "previous arrest turned to his advantage, for it ensured that he was already ... closest to the center of power". According to the ''Primary Chronicle'', Sviatopolk successfully arranged the murder of three of his brothers, Boris of Rostov, Gleb of Murom and Sviatoslav of the Derevlian lands. When news of the fratricides reached Vladimir's fourth son, Yaroslav in Novgorod, he came to Kiev from the north with Novgorodians and Varangians. Sviatopolk's reign in Kiev was threatened. After a 3-month stand-off near Lyubech, Sviatopolk was defeated and "fled to the Poles". Bolesław, who had recently agreed a peace with the German Kingdom (the Treaty of Bautzen), agreed to support his son-in-law through military intervention.Sources
There are three main sources that provide historians with evidence for these events. The best and most reliable account is from a chronicle by Bishop Thietmar of Merseburg, who obtained detailed information from Saxon knights fighting for Bolesław. The '' Primary Chronicle'' (PVL; previously attributed to Nestor the Chronicler) is another source giving a detailed account of events, its reliability being variable, depending event-by-event on the sources from which it was compiled. Nestor's writing reflects the typical Rus' admiration of Vladimir as a saint, while Bishop Thietmar's account, despite a generally positive attitude towards the Rus', paints both Bolesław and Vladimir exclusively in a negative light. A third source is the '' Gesta principum Polonorum'', a semi-legendary ode to the early Polish dukes written in the 1110s by the Benedictine monk Gallus'. This account portrays Bolesław in a very positive light.Expedition to Kiev
"Among those rendering assistance to the aforesaid duke, were three hundred of our ermanwarriors, five hundred Hungarians, and one thousand Pechenegs".Polish historian Rafał Jaworski states that the estimates of the size of Bolesław's army range between 2,000 and 5,000 Polish warriors, in addition to Thietmar's reported 1,000
"We may not keep silent regarding the sad and harmful events that occurred in Russia. For, on our advice, Boleslav attacked it with a large army and caused much destruction. On July 22, the duke came up to a certain river, where he ordered his army to set up camp and separate the necessary bridges. Also camped near the river, along with his army, was the king of the Russians."Probably after concentrating his forces during June, in July Bolesław led his troops to the border - the banks of the Southern Bug River, near one of the settlements of the Volhynia region. In the meantime, Bolesław's Pecheneg allies approached Kiev, forcing Yaroslav to detach a part of his forces to ensure the safety of his capital. According to Jaworski, Yaroslav, in turn, wanted to prevent Bolesław from uniting with the Pechenegs, defeat Bolesław's main force and then take care of the less organized Pechenegs. The two armies met on opposite banks of the River Bug. Yaroslav's forces may have taken position with archers covering the crossing points. Bolesław seems to have taken his time, allowing his army to rest, and started work on makeshift bridges. The Battle of the River Bug finally occurred around July 23. Thietmar's near-contemporary account offered the following:
The Poles provoked the enemy into fighting and, with unexpected success, drove them from the river bank which they were supposed to defend. Elated by this news, Boleslav hastily notified his companions and quickly cross the river although not without effort. In contrast, the hostile army, drawn up in battle formation, vainly attempted to defend its homeland. It collapsed at the first attack, however, and failed to mount any effective resistance. Among those who fled, many were killed, but only a few of the victors were lost. On our side, the dead included Erich, an illustrious knight whom our emperor had long held in chains. From that day on, with every success, Boleslav drove the scattered enemies before him; and the whole populace received and honoured him with many gifts.According to the later ''Chronicle of Polish Dukes'' by Gallus, the battle occurred by accident: When Bolesław decided to throw a feast to boost his army's morale, Yaroslav's archers and scouts decided to create trouble for the Polish servants who were gutting the animals and preparing them near the river. However, they only annoyed them enough that the servants themselves crossed the relatively shallow river and chased away Yaroslav's surprised troops, who had been guarding the river. Bolesław learned of the skirmish sooner than Yaroslav, and managed to move most of his army across the river, defeating the surprised Yaroslav. The Russian ''Primary Chronicle'' gives a different version of events, in which both armies were combat ready and separated by the river before Bolesław, enraged by insults from across the river, charged with his army, surprising Yaroslav and scattering his forces. All accounts agree that the Polish prince was victorious in the battle. Yaroslav retreated north to Novgorod, rather than to Kiev - likely suspecting that he lacked enough strength to defend Kiev, which was besieged by the Pechenegs and had a significant pro-Sviatopolk faction within its walls. Nestor notes that after reaching Novgorod, Yaroslav attempted to flee "overseas" in hopes of coming back with a Varangian force, but according to the ''Primary Chronicle'', the citizens of Novgorod pressured him to lead the fight back to Bolesław and Sviatopolk.
Fall and occupation of Kiev
Duke Boleslav invaded the Russian king's realm with his army. After placing his long-exiled brother-in-law, the Russian's brother, on the throne, he returned in high spirits.According to Thietmar, Bolesław asked Yaroslav to return his daughter, whom Yaroslav had taken prisoner. As Yaroslav refused, Bolesław took members of Yaroslav's family to Poland as prisoners when he returned to his country in September. His captives included Vladimir's widow and Yaroslav's sister, Predslava, whose hand Bolesław had sought earlier. Having been rebuffed, Bolesław now took her as a concubine. The Polish duke also took many commoners as well as much of the treasury of Kiev. Among the notable commoners was the venerated Saint Moses the Hungarian. In the past some historians (such as Zhylenko and Kostomarov) have conjectured that Bolesław decided to rule Kievan lands himself, though Bolesław had no power base there and no Rurikid blood. Bolesław's main motivation, according to the interpretations of modern historians, was to regain the Cherven Towns for his patrimony, while at the same time aiding his kinsman, to whom he had an obligation. The expedition also furnished an occasion to enrich his followers from Kiev's famous wealth. Bolesław, soon after his arrival, sent a significant force to quarter in Kiev and nearby towns, forcing Kievans to sustain them, and collected significant tributes that he divided among his allies. It was related by Thietmar that before departing, Bolesław
was shown an unspeakable amount of treasure, most of which he distributed among his friends and supporters.On many later occasions in the Kievan period the rulers of Poland, as well as Hungarians or Pechenegs, were paid to intervene in the Kievan succession disputes; in the case of Bolesław II, the Polish monarch took the money without making any expedition.
Aftermath
Sviatopolk lost the throne soon afterwards and lost his life the following year. As Bolesław was involved in a conflict withNotes
References
Bibliography
Primary sources
* '' Primary Chronicle'' ( 1110s). ** (First edition published in 1930. The first 50 pages are a scholarly introduction.) ** ** * Thietmar of Merseburg, '' Chronicon Thietmari'' (1018). ** * Gallus Anonymus, '' Gesta principum Polonorum'' ( 1118). * '' Kyiv Caves Patericon'' ( 1462) **Literature
* * * * Also appeared in '' Mówią Wieki''. * * *