Overview
Beatrix (Beatrice) of Berg (1364 in Burg on the Wupper–May 16, 1395 in Neustadt an der Weinstrasse) was the daughter of Duke William II of Berg and Electress of the Palatinate by marriage to her great granduncle Rupert I, Elector Palatine.
Life
Beatrix was the daughter of Duke Wilhelm II of Berg and his wife Anna von Wittelsbach, daughter of the Rupert II, Elector Palatine. She was probably born in Burg Castle on the Wupper, at that time the residence of her parents.
From 1380 her father ruled in Dusseldorf as Duke of Berg, where the unmarried Beatrix most likely stayed with the parents.
In 1385 Beatrix married the widowed Elector Rupert I von der Pfalz, who had been widowed for 5 years, and who was already 75 years old. Beatrix was the granddaughter of his nephew and successor Rupert II.
From Wikipedia (CC BY-SA 4.0).