She was born after her father's death and was probably brought up in retirement away from her half-brother's court. While in a convent, she was removed to marry the German Emperor Heinrich VI. She was a religious woman and her married years with the harsh and cruel Heinrich VI could not have been easy for her.
When her husband died she was recognised as ruler of Sicily, from where she removed as many Germans as possible. Having given birth to her only child at the age of forty, and surviving her husband by little over a year, she made Pope Innocent III Regent of Sicily for her four-year-old son.

Source: Leo van de Pas