Catherine de' Medici (, ; , ; 13 April 1519 – 5 January 1589) was a Florentine noblewoman born into the Medici family. She was Queen of France from 1547 to 1559 by marriage to King Henry II and the mother of French kings Francis II, Charles IX, and Henry III. The years during which her sons reigned have been called "the age of Catherine de' Medici" since she had extensive, if at times varying, influence in the political life of France.

Catherine was born in Florence to Lorenzo de' Medici, Duke of Urbino, and Madeleine de La Tour d'Auvergne. In 1533, at the age of 14, Catherine married Henry, the second son of King Francis I and Queen Claude of France, who would become Dauphin of France upon the death of his elder brother Francis in 1536. Catherine's marriage was arranged by her uncle Pope Clement VII. During his reign, Henry excluded Catherine from state affairs and instead showered favours on his chief mistress, Diane de Poitiers, who wielded much influence over him. Henry's death in 1559 thrust Catherine into the political arena as mother of the frail 15-year-old King FrancisII. When FrancisII died in 1560, she became regent on behalf of her 10-year-old son King CharlesIX and was thus granted sweeping powers. After Charles died in 1574, Catherine played a key role in the reign of her third son, HenryIII. He dispensed with her advice only in the last months of her life but outlived her by just seven months.

Catherine de' Medici

Catherine's three sons reigned in an age of almost constant civil and religious war in France. The problems facing the monarchy were complex and daunting. However, Catherine maintained the monarchy and the state institutions functioning, even at a minimum level. At first, Catherine compromised and made concessions to the rebelling Calvinist Protestants, the Huguenots, as they became known. However, she failed to fully grasp the theological issues that drove their movement. Later, she resorted in frustration and anger to hardline policies against them. In return, she was blamed for the persecutions carried out under her sons' rules, in particular the St. Bartholomew's Day massacre of 1572, during which thousands of Huguenots were killed in France.

Catherine de' Medici

Some historians have excused Catherine from blame for the worst decisions of the crown, but evidence for her ruthlessness can be found in her letters. In practice, her authority was limited by the effects of the civil wars. Therefore, her policies may be seen as desperate measures to keep the House of Valois on the throne at all costs and her patronage of the arts as an attempt to glorify a monarchy whose prestige was in steep decline. Without Catherine, it is unlikely that her sons would have remained in power. Catherine has been called "the most important woman in Europe" in the 16th century.

Catherine de' Medici

Birth and upbringing

Catherine de' Medici was born Caterina Maria Romula de' Medici on 13 April 1519 in Florence, Republic of Florence, the only child of Lorenzo de' Medici, Duke of Urbino, and his wife, Madeleine de la Tour d'Auvergne, the countess of Boulogne. The young couple had been married the year before at Amboise as part of the alliance between King Francis I of France and Lorenzo's uncle Pope Leo X against the Holy Roman Emperor Maximilian I. According to a contemporary chronicler, when Catherine was born, her parents were "as pleased as if it had been a boy".

Within a month of Catherine's birth, both her parents were dead: Madeleine died on 28 April of puerperal fever, and Lorenzo died on 4 May. King Francis wanted Catherine to be raised at the French court, but Pope Leo refused, claiming he wanted her to marry Ippolito de' Medici. Leo made Catherine Duchess of Urbino but annexed most of the Duchy of Urbino to the Papal States, permitting Florence to keep only the Fortress of San Leo. It was only after Leo's death in 1521, that his successor, Adrian VI, restored the duchy to its rightful owner, Francesco Maria I della Rovere.

Catherine was first cared for by her paternal grandmother, Alfonsina Orsini. After Alfonsina's death in 1520, Catherine joined her cousins and was raised by her aunt, Clarice de' Medici. The death of Pope Leo in 1521 briefly interrupted Medici power until Cardinal Giulio de' Medici was elected Pope Clement VII in 1523. Clement housed Catherine in the Palazzo Medici Riccardi in Florence, where she lived in state. The Florentine people called her duchessina ("the little duchess"), in deference to her unrecognised claim to the Duchy of Urbino.