"Catherine de' Medici (Italian: Caterina de' Medici, 13 April 1519? 5 January 1589), daughter of Lorenzo II de' Medici and of Madeleine de La Tour d'Auvergne, was a Franco/Italian noblewoman who was Queen consort of France from 1547 until 1559, as the wife of King Henry II of France. In 1533, at the age of fourteen, Caterina married Henry, second son of King Francis I and Queen Claude of France. Under the gallicised version of her name, Catherine de Me?dicis, she was Queen consort of France as the wife of King Henry II of France from 1547 to 1559. Throughout his reign, Henry excluded Catherine from participating in state affairs and instead showered favours on his chief mistress, Diane de Poitiers, who wielded much influence over him. Henry's death thrust Catherine into the political arena as mother of the frail fifteen-year-old King Francis II. When he died in 1560, she became regent on behalf of her ten-year-old son King Charles IX and was granted sweeping powers. After Charles died in 1574, Catherine played a key role in the reign of her third son, Henry III. He dispensed with her advice only in the last months of her life."--Wikipedia.