Frederica Louise Caroline Sophie Alexandrina of Mecklenburg-Strelitz (German: Friederike Louise Caroline Sophie Alexandrine; 3 March 1778 – 29 June 1841) was a German princess who married successively Prince Louis Charles of Prussia, Prince Frederick William of Solms-Braunfels, and her first-cousin Prince Ernest Augustus, Duke of Cumberland (later King of Hanover).
Frederica became Hereditary Princess of Greece, her husband being heir presumptive to his childless elder brother, King George II. During the early part of their marriage, they resided at a villa in Psychiko in the suburbs of Athens. Ten months after their marriage, their first child, the future Queen Sofia of Spain, was born on 2 November 1938.
Duchess Frederica of Mecklenburg-Strelitz: 2. Ernest Augustus, Crown Prince of Hanover: 10. Joseph, Duke of Saxe-Altenburg: 5. Princess Marie of Saxe-Altenburg: 11. Duchess Amelia of Württemberg: 1. Ernest Augustus, Duke of Brunswick: 12. Friedrich Wilhelm, Duke of Schleswig-Holstein-Sonderburg-Glücksburg: 6. Christian IX of Denmark: 13.
Princess Augusta of Hesse-Kassel (Augusta Wilhelmina Louisa; 25 July 1797 – 6 April 1889) was the wife of Prince Adolphus, Duke of Cambridge, the tenth-born child, and seventh son, of George III of the United Kingdom and Charlotte of Mecklenburg-Strelitz.
By marriage. The wife of a British prince becomes a British princess, but she cannot use the princess title before her own given name. She can use the princess title with her husband's given name (e.g. Princess Michael of Kent), while the wife of the Prince of Wales is styled as the Princess of Wales (e.g. Catherine, Princess of Wales).
Duchess Marie of Mecklenburg-Strelitz (1878–1948) married 22 June 1899 and divorced 31 December 1908 Count George Jametel (1859–1944), married secondly on 11 August 1914 Prince Julius Ernst of Lippe (1873–1952). Duchess Jutta of Mecklenburg-Strelitz (1880–1946) married 27 July 1899 Danilo, Crown Prince of Montenegro.
Princess Frederica Charlotte of Prussia (Friederike Charlotte Ulrike Katharina; 7 May 1767 – 6 August 1820) was a Prussian princess by birth and a British princess by marriage. She was the eldest daughter of King Frederick William II of Prussia and the wife of Prince Frederick, Duke of York and Albany , second son of King George III of the United Kingdom .