[citation needed] Sophie Friederike was briefly a member of the Kazanowski and Ostroróg Polish noble families through subsequent marriages.

"[citation needed] Sophie Friederike was the second child and daughter[citation needed] of Karl Anselm, 4th Prince of Thurn and Taxis and his wife Duchess Auguste of Württemberg.

[citation needed] She was an elder sister of Karl Alexander, 5th Prince of Thurn and Taxis.

[citation needed] Sophie Friederike married Prince Hieronim Wincenty Radziwiłł, son of Michał Kazimierz "Rybeńko" Radziwiłł and his wife Anna Luiza Mycielska, on 31 December 1775 in Regensburg, Free Imperial City of Regensburg, Holy Roman Empire.

[citation needed] Sophie Friederike and Hieronim Wincenty had one son: Sophie Friederike married for a second time to Prince Andrzej Kazanowski around 1795 and for a third time to Count Mikołaj Ostroróg around 1797.