Adeliza de Lacy was a notable figure in medieval England, born around 1100. She was the daughter of Hugh de Lacy, a prominent nobleman, and became the wife of Henry I of England. Her marriage to the king helped strengthen political alliances during a tumultuous period in English history. After the death of her first husband, Adeliza married William d'Aubigny, a powerful lord. She was known for her charitable works and contributions to religious institutions, including the founding of Abbey of Reading. Adeliza's legacy is remembered through her influence on both the nobility and the church in England.