 This marriage probably took place about 1316, when Gediminas supported Wacław during a civil war in the divided Duchy of Masovia.After Wacław's death in 1336, Elzbieta managed her own wealth.She is mentioned for the last time in 1361, when her brother Kęstutis escaped from Marienburg and sought refuge at his sister's house; historians put her date of death at around 1364.