The second wife of Ivan Danilovich Kalita Ulyana is known to researchers thanks to the will of the Prince of Moscow and the Grand Prince of Vladimir Ivan Ivanovich, as well as from references in the Rogozhsky chronicler. Her origin, like the year of birth, is unknown. Ulyana married Ivan Danilovich after the death of his first wife, Elena in 1331. Most likely, the wedding took place in accordance with the tradition of enduring an annual mourning in 1332. Ulyana outlived her husband for twenty years. According to the will of Ivan Ivanovich, she became the owner of numerous lands. It is not known for certain whether Ivan and Ulyana had common children. A. V. Ekzemplyarsky believed that Ulyana, after Ivan's death, had a daughter unknown by name [4, p. 79]. V.A. Kuchkin believes that in the second marriage the prince had two daughters - Maria and Feodora [3, p. 13]. The exact date of Ulyana's death is unknown, presumably after 1360.
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2. Kuchkin V.A. Zaveshchanie Ivana Kality // Drevniaia Rus'. Voprosy medievistiki. № 1 (31). 2008. S. 95–108.
3. Kuchkin V.A. Moskovskie Riurikovichi (genealogiia, demografiia) // Istoricheskii vestnik. 2013. № 4 (151). S. 6–73.
4. Ekzempliarskii A.V. Velikie i udel'nye kniaz'ia severnoi Rusi v tatarskii period s 1238 g. po 1505 g.: biograficheskie ocherki po pervoistochnikam i glavneishim posobiiam. T. 1. Velikie kniaz'ia Vladimirskie i Vladimiro-Moskovskie. SPb., 1889.