Born in 1535 in Florence, Giulia de’ Medici entered the world as the illegitimate daughter of Alessandro de’ Medici, the city’s first duke and a man of mixed heritage often described as the first Black ruler of Renaissance Europe. Her father’s mother, a servant named Simonetta, was widely believed to have African ancestry, a trait that may have been passed to Giulia. From the moment of her birth, her life was entangled with secrecy, politics, and the ambitions of one of Europe’s most powerful dynasties. The Medici family had risen from the Mugello region of Tuscany through trade, founding the Medici Bank, the largest in Europe in the fifteenth century.
Under Cosimo de’ Medici and his grandson Lorenzo the Magnificent, the family’s wealth transformed Florence, though they remained citizens in name until 1532. It was in that year that Giulia’s father, Alessandro, became the city’s first hereditary duke under a new constitution, ending the Florentine Republic and launching Medici dynastic rule. Alessandro was born in Florence in 1510. Official records listed his father as Lorenzo de’ Piero de’ Medici, Duke of Urbino, linking him directly to the main Medici line, but many historians have argued that he was actually the illegitimate son of Giulio de’ Medici, the future Pope Clement VII.
His mother, Simonetta, was believed to have been a servant in the Medici household, and his notably dark complexion earned him the nickname Il Moro, “the Moor. ” A French author claimed in a 1560 book that Alessandro’s mother was a Moorish slave, though this remains unproven and heavily debated. What is clear is that Giulio de’ Medici treated Alessandro like a son, giving him a privileged education and preparing him for leadership. In 1527, during the War of the League of Cognac, an uprising forced the Medici out of Florence, and Alessandro lived in exile for several years.
Two years later, Pope Clement VII reached an agreement with Emperor Charles V to restore Medici rule. After a ten-month siege, Florence fell, and by 1531 the family was back in power, this time as true rulers. As duke, Alessandro earned a mixed reputation. His supporters saw him as a protector of the poor, guided by common sense and justice.
His critics, especially those exiled after the siege, called him tyrannical, corrupt, and morally loose, living lavishly with numerous mistresses. One of those mistresses was Taddea Malaspina, a noblewoman from an ancient family. From their relationship came two children: Giulia, born in 1535, and a half-sister born slightly earlier. Both children were illegitimate and held no official titles, but Alessandro acknowledged them and ensured they were well cared for.
There are no surviving records of him formally naming heirs, but many historians believe he had plans for them, especially since he himself had risen to power despite his own illegitimacy. In 1536, Emperor Charles V honored a political promise to Pope Clement VII by marrying his daughter Margaret of Austria to Alessandro. The marriage was a strategic alliance meant to solidify Alessandro’s position and produce legitimate heirs. Yet despite the prestige of his new bride, Alessandro remained devoted to Taddea Malaspina, viewing marriage as a duty of state rather than a matter of the heart.
But his power was not secure for long. On the night of January 6, 1537, Alessandro was lured into a private meeting and murdered by his own cousin and confidant, Lorenzino de’ Medici. He was just twenty-six years old and died without a legitimate heir. Margaret of Austria, only fourteen at the time, had produced no children.
A few months after his death, a final child, named Porzia, was born to another mistress whose identity has since been lost to history. With Alessandro’s sudden death, power in Florence shifted overnight, and his young children were caught in the political storm. Giulia’s half-brother, Giulio, was only four years old and was passed over as successor despite being Alessandro’s only son. Instead, Cosimo I, a member of the Medici’s junior branch, was elected as the new duke.
Cosimo was himself a teenager when he took power, and he pledged to care for the orphaned children of his predecessor. Young Giulia was sent to the Villa di Castello, a family estate in the hills outside Florence. Removed from court life, she came under the watchful eye of Cosimo’s mother, Maria Salviati, a devout and commanding woman. Giulia was not alone there.
She shared her home and bedroom with Bia de’ Medici, Cosimo’s own illegitimate daughter and firstborn child, just two years older. The girls grew up like sisters, their bond filling the villa with warmth and playful energy. Maria Salviati watched over them diligently, especially during a terrifying bout of fever in February 1542. Giulia, then around seven, survived the illness.
But Bia, only five or six, did not. Her death marked a somber chapter in the nursery’s history, and she was deeply mourned by Giulia, Maria, and of course Cosimo. As Giulia grew, she became fully integrated into court life. Despite being the child of the previous duke, her paternity was not seen as a disadvantage.
Her descent from the main Medici line was honored, and her father’s assassination was even compared to the killing of Julius Caesar by Brutus. She displayed great pride in her lineage and carried herself with notable self-assurance. She received a comprehensive education in refined manners, the arts, and languages befitting a noblewoman. Although illegitimate, she was treated as a member of the family, and great care was given to her appearance and status.
On one occasion, when Giulia was about twelve or thirteen, Cosimo’s wife, Eleonora di Toledo, erupted in fury because Giulia’s riding cloak had been made with the wrong length and lacked the ornamentation she had ordered. Giulia grew into a fine young lady, and many court observers noted that she resembled her father, with the same strong features and curly hair. Despite her darker skin tone than most of the ladies at court and her speculated African heritage, many considered her beautiful. Cosimo began evaluating potential marriage prospects.
In 1550, when Giulia was about fifteen, Cosimo arranged her first marriage to Francesco Cantelmo, Duke of Popoli, a nobleman of high rank. Her dowry was enormous, worth the equivalent of tens of millions of dollars today. The marriage marked Giulia’s formal entry into aristocratic society as a duchess in her own right. Five years later, in 1555, tragedy returned.
Francesco Cantelmo died, leaving Giulia a widow in her early twenties. In her grief, she commissioned a portrait by Alessandro Allori, one of Florence’s great artists. In the painting, Giulia appears dignified, sorrowful, and proud, with an elaborately carved chair visible beside her. Art historians have offered many interpretations of that chair, some seeing a steep terrain climbed by Hercules, others a sacred mountain associated with Saint Francis.
The one thing most agreed on is that the painting was Giulia’s response to criticism of her African descent and her marriage to a nobleman some considered beneath the Medici name. Yet even that has been debated, with some claiming the portrait was not of Giulia at all. During her widowhood, Giulia spent considerable time at the Augustinian convent of San Clemente. Her half-sister Porzia served as the abbess, and Giulia supported the convent financially.
She also patronized other Augustinian institutions, dedicating herself to devotion and charity during those difficult years. In 1559, she married again, this time to Bernardetto de’ Medici, a cousin of Cosimo I. A year later, she gave birth to a son, whom she named Alessandro in honor of her father. In the early years of their marriage, Giulia and Bernardetto entertained lavishly and engaged in diplomatic affairs.
But life in Florence was not without conflict. Three years after the death of his wife Eleonora di Toledo, the forty-six-year-old Grand Duke Cosimo took a much younger mistress, Eleonora degli Albizzi, then about twenty-three. Their relationship produced two children, though the first, a daughter, died in infancy. According to court gossip, Giulia reportedly demanded to be treated as an equal by the mistress, a bold stance toward a woman secretly scorned by many at court.
This attitude strained her once close relationship with Cosimo, and although they later reconciled, things were never quite the same. The passion Cosimo felt for young Eleonora faded quickly, and in 1567 she was forced into a marriage of dishonor. That same year, Giulia and her husband relocated to Naples, where they fought for and secured the title to lands of the principality of Ottaviano. In Naples, Giulia’s influence continued.
She managed estates, patronized religious institutions, and secured her family’s future. Her descendants through her son Alessandro held the title of Princes of Ottaviano, a noble line that persists into the modern era. Even as Giulia cemented her place in history, she was slowly being forgotten by it. For centuries, she was erased from art that once celebrated her.
A striking example is a painting by Pontormo of Maria Salviati with a child. For hundreds of years, viewers saw only Maria, but in 1937 a restoration revealed that a child had been painted out. That child, most now agree, is Giulia de’ Medici. In the painting, she clings anxiously to Maria’s side, her features resembling her father Alessandro.
The painting is now believed by many to be one of the first European portraits of a girl of African and European ancestry. Not everyone agrees, of course. Some initially claimed the child was Cosimo I, while others argue it is Bia de’ Medici, noting that Giulia and Maria may not have been close enough to warrant such a tender portrait. Giulia’s husband passed away before her, not long after 1576 in Naples.
Giulia de’ Medici herself died in 1588, aged fifty-two or fifty-three. Few historical records detail her final years, but her life had been interwoven with the fortunes and intrigues of one of Europe’s most powerful dynasties. She was survived by her son Alessandro, who became Lord of Ottaviano and general of the Papal States.
His descendants later laid claim to the title of Grand Duke of Tuscany after the extinction of the main Medici line in 1737, though their efforts were ultimately unsuccessful.
