Adelaide del Vasto was countess of Sicily as the third spouse of Roger I of Sicily, and Queen consort of Jerusalem by marriage to Baldwin I of Jerusalem. She served as regent of Sicily during the minority of her son Roger II of Sicily from 1101 until 1112.
- Occupation
- consort, patron of the arts
- Position held
- regent
- Born
- 1075, 1074
- Died
- April 16, 1118
