About Frederica of Mecklenburg-Strelitz
Frederica of Mecklenburg-Strelitz (German: Friederike Luise Caroline Sophie Alexandrine; 3 March 1778 – 29 June 1841) was Queen of Hanover from 20 June 1837 until her death in 1841 as the wife of King Ernest Augustus. She was a German princess who married successively Prince Louis Charles of Prussia, Prince Frederick William of Solms-Braunfels, and her first cousin Ernest Augustus. Through her 1815 marriage to Ernest, then Duke of Cumberland, Frederica became a British princess and Duchess of Cumberland. Ernest was the fifth son and eighth child of Queen Charlotte and King George III of the United Kingdom, Frederica's paternal aunt and her husband. Frederica was born in the Altes Palais of Hanover as the fifth daughter of Charles II, Duke of Mecklenburg-Strelitz, and Princess Friederike of Hesse-Darmstadt. Her father assumed the title of Grand Duke of Mecklenburg on 18 June 1815. == Early life == Frederica's mother died on 22 May 1782 after giving birth to her tenth child. Two years later (28 September 1784), her father remarried the younger sister of his deceased wife, Princess Charlotte of Hesse-Darmstadt, but this union ended just one year later, when Charlotte died of complications resulting from childbirth on 12 December 1785. The twice-widowed Duke Charles considered himself unable to give his daughters proper rearing and education, so he sent Frederica and her elder sisters Charlotte, Therese and Louise to their maternal grandmother, Princess Maria Louise of Hesse-Darmstadt. Maria Louise's choice of a Swiss teacher for the girls, Salomé de Gélieu, proved to be a good one.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.