Barbara Aleksandrówna (c. 1428 between 1488 and 1492) was a princess and wife of prince

Bolesław IV of Warsaw Bolesław IV of Warsaw (; – 10 September 1454), was a Polish prince and member of the House of Piast in the Masovian branch. He was Duke of Warsaw during 1429–1454 (under regency until 1436) and sovereign Duke of Podlachia in 1440–1444. H ...

. She was the daughter of Alexander Włodzimierzowic,

Grand Prince of Kiev The Grand Prince of Kiev (sometimes also Grand Duke) was the title of the monarch of Kievan Rus', residing in Kiev (modern Kyiv) from the 10th to 13th centuries. In the 13th century, Kiev became an appanage principality first of the grand prin ...

. Between 1440 and 1443 she married Bolesław IV of Warsaw. Her husband died on September 10, 1454.Grabowski, p. 477. After death of her mother-in-law in 1458 she became a regent in the name of her minor sons Konrad III, Bolesław V, Kazimierz III, and Janusz II.Grabowski, p. 361. She usually entitled herself ''ducissa et gubernatrix Mazouie etc''. She was buried in

Nowe Miasto, Płońsk County Nowe Miasto () is a town in Płońsk County, Masovian Voivodeship, in east-central Poland. It is the seat of the gmina (administrative district) called Gmina Nowe Miasto. It lies approximately east of Płońsk and north-west of Warsaw War ...

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References

*Balzer Oswald, Genealogia Piastów, Akademia Umiejętności, Kraków 1895, p. 523. *Grabowski Janusz, Dynastia Piastów mazowieckich, Kraków 2012. *Jasiński Kazimierz, Rodowód Piastów mazowieckich, Wydawnictwo Historyczne, Poznań – Wrocław 1998, ISSN 1509-8702, {{ISBN, 83-913563-0-2, pp. 159–160.

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