Sabina was the daughter of Albert IV, Duke of Bavaria and his wife Kunigunde of Austria, daughter of Frederick III, Holy Roman Emperor and Eleanor of Portugal.

[1] Sabina was promised at the age of six years for strategic reasons by her uncle, King Maximilian I, to Ulrich of Württemberg to whom she was married 15 years later.

This marriage was unhappy because of Ulrich's tendency to violence, so that Sabina was ultimately forced to flee from Württemberg without her two children and seek shelter with her brothers in Munich.

When, in 1551, her son, Christoph, inherited the throne of Württemberg, Sabina moved to Nürtingen, which was then the official widow's residence of the Württembergs.

There she led a small court and being an educated woman turned it into a meeting place for Württemberg's Protestants.