Career
She was known as "the Jewel of Regensburg." She was an elder sister of Karl Alexander, 5th Prince of Thurn and Taxis. Titles and styles 20 July 1758 – 31 December 1775: Her Serene Highness Princess Sophie Friederike of Thurn and Taxis 31 December 1775 – c. 1795: Her Serene Highness Princess Sophie Friederike Radziwiłł, Princess of Thurn and Taxis c.
1795 – c.
1797: Her Serene Highness Princess Sophie Friederike Kazanowski, Princess of Thurn and Taxis c. 1797 – 31 May 1800: Her Serene Highness Countess Sophie Friederike Ostroróg, Princess of Thurn and Taxis.
