Although chroniclers wrote little about Zbysława, her marriage to Bolesław III Wrymouth had enormous political significance. The daughter of Grand Prince Sviatopolk II of Kiev became an important link in the alliance between the Piasts and the Rurik dynasty. In the shadow of fratricidal wars and dynastic intrigues, she played a role that influenced the course of events throughout Central and Eastern Europe.
Who Was Zbysława
Zbysława was the daughter of Grand Prince Sviatopolk II of Kiev, one of the most powerful rulers of Kievan Rus, whose position – especially after 1097 – became exceptionally precarious under pressure from the Monomakhovychi and Rostislavychi. Rus chroniclers, particularly the author of the „Tale of Bygone Years”, mention Sviatopolk as an active ruler, but one forced into constant struggle to maintain his throne. Zbysława was probably his eldest daughter, raised at the Kiev court in an atmosphere of rivalry, diplomatic intrigue, and military mobilization.
Zbysława’s mother remains unknown, though some scholars, including Oswald Balzer and Kazimierz Jasiński, allow for the possibility that she was a daughter of Hungarian King Géza I or Saint Ladislaus. If this were indeed true, Zbysława would have combined the blood of two influential dynasties: the Rurikids and the Árpáds, which would have further elevated her matrimonial value in the eyes of the Polish Piasts. On the other hand, there are skeptics – like Roman Grodecki – who point to the lack of unambiguous source evidence confirming these connections. As a result, the princess’s lineage remains a subject of dispute.
It seems, however, that regardless of her mother’s exact origin, Zbysława herself was a valuable asset in the Piasts’ eastern policy. The marriage to Bolesław III Wrymouth took place no later than 1102, just after Władysław Herman’s death and at the moment when a serious conflict over power began to emerge between Bolesław and his older brother Zbigniew. As Gerard Labuda notes, this marriage was meant not only to secure the younger brother’s eastern flank but also to guarantee him personal support from Sviatopolk II – his father-in-law, who was also struggling with internal opposition.
Interestingly, Gallus Anonymus devoted almost no attention to Zbysława – he mentions her only as the wife and mother of Władysław, later known as the Exile. This silence may indicate that she played no public role, but it could also have been the result of the chronicler’s deliberate omission of her figure, as he focused on heroicizing Wrymouth. Meanwhile, other indirect sources – though sparse – confirm that her lineage and connections had a significant impact on shaping alliances in the region.
Political Marriage
The marriage of Bolesław III Wrymouth to Zbysława, like most medieval unions, was arranged to achieve immediate political benefits. Although Jan Długosz held a different opinion, Gallus Anonymus had already pointed to the political background of this marriage. There is no reason not to trust the anonymous chronicler. Poland’s proximity to Rus favored marriages between representatives of the ruling families in both countries. Wrymouth could have chosen a partner from another country (for example, from Hungary, which bordered the Piast state to the south), but ultimately he did not decide on such a solution.
As historians argue, thanks to the alliance with Sviatopolk II’s Rus, Bolesław III Wrymouth could count on his father-in-law’s support during a potential armed confrontation with his half-brother Zbigniew and the hostile Germans and Czechs. The Grand Prince of Kiev’s help could also prove useful to the Piast duke in case of war with the Rostislavychi residing in Przemyśl and Terebovlia, who notoriously troubled the eastern Polish lands.
Sviatopolk, Bolesław III Wrymouth’s father-in-law, was also in conflict with the Rostislavychi. In 1097 and 1099, he undertook two expeditions against them, but neither ended in success. The alliance with Wrymouth could help Sviatopolk defeat enemies who sought complete independence from him. Dangerous for both father-in-law and son-in-law were also the raids of the Cumans allied with the Rostislavychi, who left only ashes along their march routes. These nomads visited Poland much less frequently than Rus lands, but still posed a great threat to the Piasts (their actions were lightning-fast, and equally quick retreat from attacked territories made effective defense impossible). Finally, Sviatopolk in alliance with Bolesław could build a counterweight to the growing power of Prince Vladimir Monomakh, who officially favored the Rostislavychi and tried to seize Kiev.
Historians believe that the Polish-Rus alliance from the early period of Bolesław III Wrymouth’s reign was further strengthened by another dynastic marriage: an unnamed sister of Bolesław to an anonymous Rus prince. In historiography, it was most often suspected that the Piast princess married Yaroslav of Volhynia, son of Sviatopolk II. This marriage was dated to either 1103 or 1106. The Rus prince’s mediation in 1107 during Wrymouth’s conflict with Zbigniew would argue for Yaroslav’s marriage to Władysław Herman’s daughter.
Immediate Effects of the Marriage
Zbigniew must have been deeply concerned by the success of Bolesław III Wrymouth’s marriage to Zbyslava. Everyone around understood that Bolesław was not marrying the Rus princess, and thus the Kiev court, out of mere caprice. The available source material is silent about whether the older brother tried in any way to prevent the rapprochement between Cracow and Kiev. If he made any efforts, whose scale we can only guess, they ultimately ended in failure.
Zbigniew could possibly vent his anger on the groom. According to Gallus Anonymus, Bolesław invited his older brother to the wedding, but instead of appearing at it, he „allegedly encouraged the Czechs to enter Poland. Then the Czechs spread raids throughout the Wrocław region and, gathering booty and captives and starting fires, inflicted damage on this land that would last for years. Hearing of this, Bolesław, though he grieved more over the dishonored brotherhood than over the destruction of the state, nevertheless immediately sent an embassy to his brother asking why he had done this and how he had offended him. Zbigniew, however, replied that he knew nothing of such things and cunningly argued that he was innocent of such a shameful act. And when Bolesław constantly clashed with enemies, both Czechs and Pomeranians, and bravely defended his portion from invaders, Zbigniew, even when asked, did not help his brother in such need, but moreover, secretly made alliances and friendships with his brother’s enemies and sent them monetary aid instead of troops. And though the warlike Bolesław turned to him many times, both through embassies and personally at meetings, admonishing him with brotherly love not to enter into alliance and friendship with enemies of their paternal inheritance, either openly or secretly, for great division in the Polish kingdom could result from this, he for his part responded reasonably and calmly and thus restrained his brother’s anger and the hatred of the nobles”.
Gallus most likely did not invent the entire incident of the Přemyslid invasion of southern Polish lands, because Cosmas of Prague included a similar account in his work. According to the second of the mentioned chroniclers, Bolesław III Wrymouth, learning of the appearance of Czechs under the command of Bořivoj and Sviatopolk in his duchy, quickly sent his trusted voivode Skarbimir there, relying on his diplomatic skills. Skarbimir did not disappoint his master and even managed to bribe Bořivoj’s advisors (one Grabisz and Prociwin), who advised their ruler to abandon further support for Zbigniew. Skarbimir offered the Czechs ten bags of silver. Bořivoj took this entire sum for himself. His ally, Moravian Duke Sviatopolk, did not like this, which later led to conflict between them.
Ultimately, the unexpected Czech invasion of 1103 did not cause Bolesław III Wrymouth greater damage, perhaps except material (normal in such situations). It seems that the scale of the Přemyslid strike described by Gallus Anonymus was not very large at all. According to historian N. Delestowicz, during the Polish-Czech struggles „there could have been only a few minor clashes between Bolesław’s army and the invader, after which the young Piast managed to convince Bořivoj to abandon further expedition against him. If we were to trust Gallus Anonymus’s account of causing such great destruction, it would be quite improbable that Zbigniew did not take advantage of the opportunity and defeat his brother, who would then surely have been exiled from the state. He did nothing of the sort, which further proves that the expected attack by Czech Duke Bořivoj on Bolesław III Wrymouth had no fundamental impact on the development of events. For Bořivoj abandoned Zbigniew and, after receiving generous monetary payment from Bolesław, stopped further attack on the Silesian duchy”.
Further Battles
Zbigniew, by setting the Czechs against his brother, began a series of fratricidal battles that he ultimately lost completely. During these struggles, he used the support of the Přemyslids and Pomeranians, while Bolesław could count on substantial support from the Rus and Hungarians.
In 1106, Zbigniew unexpectedly appeared at the Kiev court of Sviatopolk II, which was recorded in the „Tale of Bygone Years”. The purpose of his visit is not known, though it seems that he aimed, as some historians believe, to break the alliance linking Wrymouth with his father-in-law. From the development of later events, it appears that Zbigniew’s intentions failed, since Rus armies faithfully fought on Bolesław’s side in the civil war taking place in Poland. And it was precisely thanks to these reinforcements that Wrymouth could enjoy the long-awaited victory over his half-brother, who was forced to leave Polish lands.
One can only guess how Zbysława viewed the course of the civil war in the Piast family. One scenario assumes that she encouraged her husband in these difficult moments for him, although it is hard to determine whether she was a supporter of fratricidal bloodshed. Perhaps initially she wanted the quarreling brothers to reach an agreement at the negotiating table, and Zbigniew’s intransigence, who at all costs sought to gain power at his brother’s expense, made her abandon this concept.
It is also possible that Zbysława from the very beginning of the conflict desired revenge on Zbigniew for what happened in 1103, and therefore urgently begged her father and brother Yaroslav to continue actively supporting her husband. Unfortunately, due to lack of sources, it is difficult to say how it really was. It could equally well have been that she withdrew into the shadows and patiently waited for the development of events. She would thus have acted like most contemporary women, for whom warfare or politics were not dream occupations.
Bibliography:
-Dalewski Z., Bolesław Wrymouth’s penance and Gallus Anynomous’ chronicle, [w:] Gallus Anonymous and his chronicle in the context of twelfth-century historiography from the perspective of the latest research, red. K. Stopka, Kraków 2010.
-Delestowicz N., Zbigniew, książę Polski, Poznań 2017.
-Madejczyk E., Związki rodzinne Piastów i Rurykowiczów do końca XIII wieku, „Przegląd Humanistyczny” 2004, t. 48, nr 1.
-Maleczyński K., Bolesław III Krzywousty, Wrocław 1975.
-Rosik S., Bolesław Krzywousty, Wrocław 2013.
-Trawkowski S., Bolesław III Krzywousty, [w:] Poczet królów i książąt polskich, red. A. Garlicki, Warszawa 1984.
Rory Thornfield
Rory's grandfather left behind a wartime diary filled with accounts of a minor Burma skirmish that history books never mentioned. Reading it, Rory realized: behind every famous battle are dozens of forgotten struggles, each with its own human drama.
His preferred topics: The overlooked corners of military history – secondary campaigns, shadow battalions, local conflicts that never made headlines. From medieval sieges to twentieth-century expeditions, he focuses on the soldiers, not the generals. The people who faced impossible choices and carried those experiences forever.
Rory strips away the romanticism without losing respect for those who served. He combines tactical analysis with personal stories, examining human endurance and moral complexity rather than celebrating warfare. His writing is balanced, thoughtful, and deeply researched.
Outside work, Rory visits forgotten battlefields (now quiet farmland), photographs war memorials nobody tends anymore, and interviews veterans' families.