"Princess Magdalena Augusta of Anhalt-Zerbst (13 October 1679 – 11 October 1740) was, by birth, a Princess of Anhalt-Zerbst and, by marriage, a Duchess of Saxe-Gotha-Altenburg. She was the maternal grandmother of George III of the United Kingdom.
She was born Princess Magdalena Augusta of Anhalt-Zerbst. Her father was Karl of Anhalt-Zerbst and her mother was Duchess Sophia of Saxe-Weissenfels." - (en.wikipedia.org 29.01.2020)
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