Double Eclipse, Feast of the Annunciation and Mazepa’s Niece «Marcianna»

The purpose of this publication is to introduce unknown information from the sermon of 1699 of the Kyiv pricher Stefan Yavorskyi, which concerns Ivan Mazepa’s niece Marianna Vitoslavska. Thanks to Yavorskyi’s mentions, we can establish the date and circumstances of Marianna’s taking the veil, and therefore revise the assumptions about the fate of Vitoslavska that proposed in historiography. The publication of the fragment of the sermon is preceded by a short introduction, designed to explain the context of the mention of Vitoslavska, as well as to recall the researchers’ assumptions regarding her biography.