About Princess Marie-Auguste of Anhalt
Princess Marie Auguste of Anhalt was the daughter of Eduard, Duke of Anhalt, and his wife, Princess Louise Charlotte of Saxe-Altenburg. She married and divorced a son of Kaiser Wilhelm II, then married and divorced a baron. Her paternal grandparents were Frederick I, Duke of Anhalt and Princess Antoinette of Saxe-Altenburg. Her maternal grandparents were Prince Moritz of Saxe-Altenburg and Princess Augusta of Saxe-Meiningen. Marie-Auguste was an elder sister of Prince Joachim Ernst, who would become the last Duke of Anhalt for a few months in 1918.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.