Apep Bar Investigations | European Power, Part 2 | October 25, 2026
Before modern central banks, powerful merchant companies in Florence moved money across borders, extended credit to rulers and traded the commodities that sustained European economies. Their surviving records reveal how economic influence worked—and why the claim that a single hidden bloodline controlled it all does not fit the evidence.
Follow the ledgers, not the legend
When historians investigate European dynasties, the strongest starting points are not symbols or lists of supposed “ruling families.” They are tax registers, contracts, correspondence and account books. Florence’s great merchant-bankers were powerful because their businesses linked commercial trade, credit, political relationships and international payments. Their histories also demonstrate that financial power could be lost: several of the largest firms collapsed.
Three names recur in this record: Bardi, Peruzzi and Medici. But these were not three branches of one uninterrupted organization. The Bardi and Peruzzi operated their largest enterprises in the thirteenth and fourteenth centuries; the best-known Medici bank was founded in 1397, after those earlier firms had failed. Treating them as one timeless syndicate would erase the changes that made medieval finance so consequential.
The Bardi and Peruzzi: international finance before the Medici
In the first half of the fourteenth century, the Bardi and Peruzzi companies built extensive commercial networks. They were not banks in the modern retail sense alone. Their activities encompassed merchandise, credit, currency exchange and payments across jurisdictions. Historian Edwin S. Hunt describes them as exceptionally large medieval merchant-banking firms, alongside another Florentine company, the Acciaiuoli. Their networks reached markets and political centers far beyond Tuscany.
Their dealings with Edward III of England are among the most frequently repeated stories in financial history. The Florentine chronicler Giovanni Villani blamed the companies’ failures on enormous loans to the English king during the opening period of the Hundred Years’ War. Traditional accounts give spectacular figures: 900,000 florins for the Bardi and 600,000 for the Peruzzi. Those numbers are historical claims, not verified balances that can safely be repeated as fact.
Hunt’s archival reassessment challenged the conventional explanation. He argued that the firms lacked the resources to make loans on the scale usually attributed to them and that some royal advances could have been repaid or offset in ways not apparent from surviving government accounts. The companies did collapse in the 1340s; the precise contribution of English royal borrowing to those failures is a more complex question than the familiar story of a king simply refusing to pay.
This distinction matters. If a medieval chronicler’s figures are uncertain, they cannot responsibly become the basis for a modern claim that particular families secretly engineered European wars.
The Medici: banking becomes political influence
In 1397, Giovanni di Bicci de’ Medici established the Florentine banking house that became central to his family’s ascent. The historical collection of Florence’s Palazzo Medici Riccardi identifies the firm’s founding, its initial capital of 10,000 florins and its business in deposits, bills of exchange, lending and investment. The same account records important early branches in Rome and Venice and describes Giovanni’s role in papal financial administration.
Over the fifteenth century the Medici enterprise operated through several European centers. Economic historian Armando Sapori, reviewing Raymond de Roover’s landmark study, identifies branches in Rome, Venice, Lyon, Bruges and London. The network handled exchange and credit while the family’s financial standing supported its growing political position in Florence.
What was the mechanism of influence? Not a mysterious device: commercial relationships, access to capital, political alliances and the ability to place trusted associates in key positions. Those advantages could reinforce one another. A banking family could support political allies, while political influence could improve access to contracts and business opportunities. This is an explanation of documented institutional relationships—not proof that the family controlled every government with which it traded.
The Medici bank was not immortal. Sapori traces its high point to the era of Cosimo de’ Medici and its decline through the later fifteenth century, ending with the political crisis of 1494. The failure is an important corrective to claims of uninterrupted, omnipotent dynastic command.
Religion, banking and the papal connection
The papacy was a major financial institution as well as a religious authority. Its income, expenditures and international obligations required sophisticated payment arrangements. Florentine bankers competed for this business. The Palazzo Medici Riccardi historical account describes Giovanni di Bicci’s rise as an important papal banker in the early fifteenth century.
That connection is significant and documentable. But it is not the same as saying that all papal decisions were dictated by a banker, or that a bank’s financial services establish a covert chain of command. Each proposed link requires a specific record: a contract, payment entry, appointment, letter or contemporaneous report.
The evidence is still accessible
Much of the underlying documentary trail survives. The Archivio di Stato di Firenze provides digital access to historical collections including the Mediceo avanti il Principato, containing Medici family papers from before 1532, and the Florentine Catasto. Brown University’s Online Catasto of 1427 offers a searchable version of Florentine tax and property information for 1427–29. Those records help researchers examine assets, households and the economic geography of the city rather than rely on inherited family lore.
The University of Pennsylvania Libraries also preserves the Gondi-Medici Business Records, a substantial collection of manuscripts including account books, letters, ledgers, legal records and documents of debt and credit. Much of that collection dates from later periods, so researchers must avoid using a sixteenth-century ledger as direct evidence of a fourteenth-century transaction. Chronology is essential.
Were these the “thirteen families”?
Popular narratives sometimes place Italian banking houses inside a fixed list of thirteen families said to control Europe or the world. The historical material discussed here supports a narrower and more meaningful conclusion: particular Florentine families exercised substantial, changing commercial and political influence at identifiable times and places. It does not establish an unbroken thirteen-family governing organization.
The next question is not whether an old surname appears on a list. It is which person, in which year, acting through which institution, did what—and what document demonstrates it? We will apply that test consistently to aristocratic, banking and religious institutions, without assigning collective responsibility to ethnic or religious communities.
What comes next
Part 3 turns to the Orsini, Colonna and Borghese: the papal aristocracy, family alliances and the evidence behind claims about Italy’s so-called “Black Nobility.” We will distinguish documented noble lineages and church offices from later conspiratorial interpretations.
Sources and archival starting points
- Edwin S. Hunt, “A New Look at the Dealings of the Bardi and Peruzzi with Edward III,” Journal of Economic History 50, no. 1 (1990) — scholarly reassessment of royal borrowing and the firms’ failures.
- Edwin S. Hunt, The Medieval Super-Companies (Cambridge University Press, 1994), introduction — comparative history of major Florentine merchant companies.
- Palazzo Medici Riccardi historical collection, “Giovanni di Bicci fonda il banco Medici” — founding and early operations of the Medici bank.
- Armando Sapori, “The Medici Bank,” PSL Quarterly Review (originally 1949) — historical scholarship on branches, business structure and decline.
- Archivio di Stato di Firenze, digitized archival collections — primary-document repository.
- Brown University, Online Catasto of 1427 — searchable historical tax and property records.
- University of Pennsylvania Libraries, Gondi-Medici Business Records — surviving business manuscripts, letters and ledgers.
Editorial note: This series distinguishes historical evidence, scholarly interpretation and allegations. No claim of an all-controlling hereditary network is treated as established without independently verifiable records.
