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The Grimaldis of Monaco: from a Genoese alleyway to the princely crown

The extraordinary history of the Grimaldi: from a family of Genoese merchants from the neighborhood of the same name to the dynasty that has ruled Monaco for over 700 years.

27 March 2026 · 8 min read
The Grimaldis of Monaco: from a Genoese alleyway to the princely crown
Immagine generata con AI (Google Gemini)

In the heart of Genoa, where the modern Via del Campo now stands, there was once a neighborhood called Grimaldi. From those stones emerged one of the families destined to write the history of Europe: the Grimaldis, who went from Genoese merchants to Princes of Monaco. A story that begins among the caruggi of the Superba and reaches the gilded halls of the Monte Carlo Casino, passing through one of the boldest coups in medieval history.

It is January 8, 1297 when everything changes. François Grimaldi, called “the Cunning,” knocks on the doors of the fortress of Monaco dressed as a Franciscan friar. The soldiers open them trustingly – who would ever suspect a humble religious man? – but under the cassock hide weapons and determination. In just a few minutes, the stronghold passes into Genoese hands. Thus is born the longest-reigning dynasty in Europe, which still rules today after more than seven centuries.

Genoese roots: when the Grimaldis were Guelphs of the Superba

The Grimaldis have their roots in the political and commercial fabric of 12th-century Genoa. The family belonged to the Guelph faction, loyal to the Pope, in a city torn by conflict with pro-imperial Ghibellines. Their neighborhood, in the heart of the medieval city, was one of the liveliest: shipbuilders’ workshops, merchant tower-houses, the constant bustle of those who made navigation and commerce their wealth.

🏛️
Monument · Historic Center
Piazza San Lorenzo, Genoa
Mon-Sat 8:00-12:00 and 15:00-19:00, Sun 8:00-13:00 and 15:00-19:00
Cathedral free, Treasury €6
Medieval cathedral where Genoese patrician families, including the Grimaldis, participated in the city’s religious life.
🏛️
Monument · Historic Center
Piazza Matteotti 9, Genoa
Tue-Sun 10:00-19:00
Admission varies according to exhibitions
Former seat of the government of the Republic of Genoa, where the Grimaldis held public office before their exile.
Medieval caruggi of Genoa with historic tower-houses
The caruggi of Genoa’s historic center, where the Grimaldi family was born and prospered before exile.

Image generated with AI (Google Gemini)

Grimaldo Canella, the documented founder, was consul of the Republic in 1160. A man of his time: navigator, merchant, politician. Like many Genoese patricians, he alternated sea voyages with sessions in the municipal palace, building that network of relationships that made Genoa the “gateway to the Mediterranean”. The Grimaldi owned ships, trading posts in Constantinople, and credit dealings with Flemish merchants. A wealth that allowed them to maintain tower-houses in the city center and to aspire to the highest offices of the Republic.

But Genoese politics was a stormy sea. In 1271, the victory of the Ghibellines led by the Doria and Spinola families forced the most important Guelphs into exile: Fieschi, Grimaldi, Del Carretto. For the Grimaldi, exile was not an end, but the beginning of a new story. While other families scattered or resigned themselves to their fate, they looked beyond the Maritime Alps, toward that rocky coast where the ancient Portus Herculis Monoeci stood.

The stroke of genius: Monaco conquered with cunning

The conquest of Monaco was not by chance. The Grimaldi knew that coast well: their ships made port there, their merchants traded there. They knew that the fortress, built by the Genoese themselves in 1215, controlled one of the most important routes of the western Mediterranean. It was the ideal point for an “operational” exile: far enough from Genoa to be safe, close enough to maintain contacts and, above all, strategic for controlling maritime traffic.

Frati francescani medievali in abiti monastici
Franciscan friars like those François Grimaldi impersonated to conquer Monaco in 1297.

Image generated with AI (Google Gemini)

François Grimaldi, “the Cunning One,” studied the scheme for months. Monaco was well fortified, but had a weak point: trust in religious men. In an era when monasteries were centers of hospitality and friars were respected messengers, no one would have suspected a group of Franciscans on a journey. The plan was as daring as it was simple: present themselves at the gates dressed as religious, be welcomed for the night, and once inside open the doors to companions hiding in the surrounding area.

On January 8, 1297, at sunset, a small group of “friars” presented themselves at the fortress. François Grimaldi led the procession, hood lowered and hands clasped in prayer. The soldiers opened without hesitation. But as soon as they crossed the threshold, the fake religious cast off their robes and seized their weapons. Within minutes, the fortress was in their hands. Hidden companions rushed in, and Monaco became Grimaldi. A bold stroke that today, seven centuries later, is still commemorated in the princely coat of arms: two armed friars with swords drawn.

From Genoese exiles to a European dynasty

The conquest of Monaco was just the beginning. The Grimaldi had to fight for decades to maintain control of their small domain. It was not easy: Monaco was coveted by many, from Italian republics to the kingdoms of France and Aragon. The first decades were a succession of conquests and losses, alliances and betrayals. But the Grimaldi had learned the Genoese lesson: in a world of giants, those who survive are those who know how to navigate political currents.

Stemma dei Grimaldi di Monaco con i due frati armati
The coat of arms of the Grimaldi of Monaco still commemorates today the conquest of 1297 with the image of the two armed friars.

Image generated with AI (Google Gemini)

The turning point came in the 14th century, when the family chose to become vassals of France. A move that guaranteed protection while maintaining autonomy: Monaco remained under the Grimaldi, but under the protective umbrella of the French crown. It was the same strategy that Genoa had used for centuries: the balance between independence and protection, the art of being small but indispensable.

Rainier I Grimaldi, in 1331, obtained official recognition of his lordship of Monaco from the King of France. He was no longer a Genoese exile occupying a fortress, but a legitimate prince. His successors consolidated power, marriage after marriage, alliance after alliance. In 1633, the Treaty of Péronne definitively established the independence of the principality under French protection. The Grimaldi had become a true European dynasty.

The Genoese DNA: commerce, navigation and pragmatism

Even as princes of Monaco, the Grimaldi maintained their Genoese DNA. Like their merchant ancestors, they understood that the wealth of a small state could not come from war or agriculture, but from commercial ingenuity. Monaco became a free port, a refuge for merchants and navigators, a crossroads of traffic. The same mentality that had made Genoa great: transforming geographical position into economic advantage.

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Museum / Attraction · Historic Center
Via Garibaldi 18, Genova
Tue-Fri 9:00-19:00, Sat-Sun 10:00-19:30
€9 full price, discounts available
One of the Palazzi dei Rolli, a testament to the wealth of Genoese patrician families like the Grimaldi.
The famous Casino of Monte Carlo with its Belle Époque architecture
The Casino of Monte Carlo, a symbol of the Grimaldi family’s entrepreneurial genius in transforming Monaco into a luxury tourism destination.

Vittex, CC BY-SA 4.0, via Wikimedia Commons

In the eighteenth century, when the principality’s finances were in collapse, the Grimaldi had a revolutionary idea: gambling. In 1856 they opened the first casino, and in 1879 they built what would become the legendary Casino of Monte Carlo. An insight worthy of Genoese merchants: if you can’t sell products, sell dreams. The success was extraordinary, so much so that Monaco became synonymous with luxury and sophistication.

Today, Prince Albert II of Monaco is the heir to that lineage born in the caruggi of Genova. When he oversees Formula 1 races in Monte Carlo or presides over the Casino’s gala evenings, he carries on a tradition that began eight centuries ago among Genoa’s tower-houses. His palace stands on the same rock conquered through cunning by the “Malicious One,” and his coat of arms still recalls that coup of January 1297.

Genoese traces in present-day Monaco

Walking through Monaco, an attentive eye can recognize the Genoese heritage. The architecture of the princely palace recalls the patrician residences of Genoa, with their loggias overlooking the sea. Monaco Cathedral, built in 1875, is dedicated to Saint Nicholas, a saint particularly venerated by Genoese sailors. Even the Monégasque flag, red and white, echoes the colors of the cross of Saint George, Genoa’s symbol.

But it is above all in mentality that the Genoese legacy persists. Monaco today is what Genoa was in the Middle Ages: a small state that transforms strategic position into wealth, that attracts capital and talent from around the world, that lives by commerce and financial services. The same capacity for reinvention that allowed Genoese merchants to prosper from Constantinople to Cádiz now allows the principality to be a worldwide center of finance and luxury tourism.

The Grand Prix of Monaco, Formula 1’s main event, is held on a circuit that runs through the same streets where caravans of Genoese merchants once passed. The port of Monte Carlo welcomes billionaire yachts as it once welcomed galleys laden with spices. The continuity is striking: the technology changes, but the essence remains the same as ever.

A curious detail: the wedding of the century and the lost legacy

The most celebrated wedding in the history of the Grimaldi, that between Prince Rainier III and American actress Grace Kelly in 1956, hides a curious detail linked to Genoa. For the wedding, the prince wanted the bride to receive as a gift some family jewels, including a tiara that according to tradition belonged to the Grimaldi since the Middle Ages. Experts claim that some of the gems in that tiara originally came from Genoese commerce in the Black Sea: Caucasian emeralds and Caspian pearls, brought to Genoa by family galleys before the exile of 1271.

Ironic to think that Grace Kelly, Princess of Monaco and Hollywood icon, wore at her wedding jewels that perhaps had sailed on Genoese ships seven centuries before. An unbroken chain connecting medieval Genoa’s caruggi to Monaco’s gilded halls, passing through Hollywood film sets.

The legacy that continues

Today, when you visit Genoa, it is impossible not to think of this extraordinary story. Walking through Via del Campo, where the ancient Grimaldi quarter once stood, or climbing toward Castello, from where the port that saw the family ships depart is dominated, you touch a piece of European history. The Grimaldi are proof that Genoa was never a provincial city, but the beating heart of a network that extended from London to Constantinople.

Their history tells us something deeper still: the Genoese capacity to transform every crisis into opportunity, every exile into conquest, every defeat into rebirth. When the Grimaldi were driven from Genoa, they did not surrender: they conquered Monaco. When Monaco faced bankruptcy, they did not give up: they invented Monte Carlo. It is the same spirit that today animates those who choose to live in or visit Genoa: the certainty that behind every caruggio lies a story, that every stone has something to tell.

If there is a lesson that the Grimaldi leave for those who wish to understand Genoa, it is this: the Superba can never be completely tamed. Its children, even when they seem defeated, always find a way to rise again and astonish the world. Whether with a galley laden with spices, a bank financing empires, or a cunning move disguised as pilgrimage, Genoese ingenuity knows no defeat. And perhaps, it is precisely this secret that makes walking today through the streets of a city that gave princes to Europe, and that continues, quietly, to write history, so utterly fascinating.

Stories, secrets and flavours of Genova. La Superba is genovabb.it's magazine — we tell the city's story the way Genovese locals live it, every week, one column at a time.
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