CASE FILE #BLPD-1478-04-26-001
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SOLVED

Pazzi Conspiracy

Renaissance Assassination Conspiracy

CLASSIFICATION: Assassination

LOCATION

Florence, Italy

TIME PERIOD

April 26, 1478

VICTIMS

2 confirmed

CASE ACTIONS
AI ANALYSIS
OFFICIAL BRIEFING (FACT-BASED)

On 26 April 1478, during Easter Sunday services at the Duomo of Florence, members of the Pazzi family, with the support of Pope Sixtus IV and other conspirators, attempted to assassinate Lorenzo de' Medici and his brother Giuliano. The attack resulted in the death of Giuliano and left Lorenzo wounded but alive. The conspiracy involved key figures such as Girolamo Riario and Francesco Salviati, with over eighty participants ultimately facing execution, many by hanging from the Palazzo della Signoria. The surviving members of the Pazzi family were subsequently banished from Florence, marking a significant failure in their attempt to usurp Medici power in the Republic.

COMMUNITY INTELLIGENCE (THEORY-BASED)

The Pazzi conspiracy was a failed assassination plot aimed at overthrowing the Medici family, orchestrated by the Pazzi family with the support of Pope Sixtus IV and other conspirators. The plan culminated on Easter Sunday in 1478, resulting in the death of Giuliano de' Medici and the wounding of his brother Lorenzo. Following the attempt, over eighty individuals connected to the conspiracy were executed, and the surviving members of the Pazzi family were exiled from Florence.

FULL CASE FILE

The Pazzi Conspiracy: A Renaissance Power Struggle

A Deadly Easter Sunday

On Easter Sunday, April 26, 1478, the city of Florence bore witness to an audacious attempt to alter its destiny. The Pazzi conspiracy, an elaborate plot orchestrated by the powerful Pazzi family and their allies, aimed to unseat the ruling Medici family. The drama unfolded within the sacred walls of the Duomo of Florence, where Lorenzo de' Medici and his brother Giuliano were the targets of an assassination attempt. While Lorenzo managed to escape with injuries, Giuliano was not as fortunate; he succumbed to his attackers, leaving the city and its power dynamics forever changed.

The Roots of Discord

The seeds of this conspiracy were sown years earlier, with the ascension of Francesco della Rovere to the papacy in 1471 as Pope Sixtus IV. Coming from humble beginnings in Liguria, Sixtus IV quickly amassed power and wealth, which he generously bestowed upon his nephews from the della Rovere and Riario families. His ambitions were grand, appointing his nephews as bishops and cardinals, and even orchestrating marital alliances to secure their influence. One such alliance involved Girolamo Riario, potentially the Pope's son, who aspired to establish a new papal state by acquiring the town of Imola, a strategic location on the trade route between Florence and Venice.

However, this acquisition was fraught with tension. Lorenzo de' Medici had initially arranged to purchase Imola from the Duke of Milan, Galeazzo Maria Sforza, for a hefty sum. Yet, the deal fell through when Sforza opted to sell to Sixtus IV for a considerably lower price, contingent on his daughter Caterina's marriage to Riario. Lorenzo’s refusal to finance this purchase through the Medici bank severed ties with the papacy, forcing Sixtus to turn to the Pazzi bank for support.

Compounding these tensions were disputes over ecclesiastical appointments. The death of key figures left archbishoprics in Florence and Pisa vacant, sparking a power struggle. Lorenzo managed to secure the archbishopric of Florence for his brother-in-law, Rinaldo Orsini, but the Pope’s appointment of Francesco Salviati as Archbishop of Pisa stoked further animosity, as it was done without the Medici's consent.

The Conspirators' Web

The conspiracy itself was a tangled web woven by key figures: Girolamo Riario, Francesco Salviati, and Francesco de' Pazzi. They sought the Pope's blessing, though Sixtus IV couched his support in ambiguous terms. While he refused to explicitly sanction murder, he made his preference for Medici removal clear, promising leniency to those who would act against them.

In a dramatic twist, an encrypted letter uncovered in 2004 revealed Federico da Montefeltro, father-in-law to Giovanni della Rovere, as a co-conspirator. He had agreed to position 600 troops outside Florence, awaiting the signal to strike.

The Day of Reckoning

The attack was meticulously planned to coincide with High Mass at the Duomo. Lorenzo and Giuliano de' Medici, both present, were attacked simultaneously. Lorenzo fought off his assailants and fled to safety, while Giuliano fell victim to Bernardo Bandini dei Baroncelli and Francesco de' Pazzi. Meanwhile, Salviati and his men attempted to seize the Palazzo della Signoria but failed to inspire the expected uprising against the Medici.

Florence responded with swift and brutal justice. Salviati, Francesco de' Pazzi, and others were hanged from the windows of the Palazzo della Signoria. In the days that followed, more than thirty conspirators met their demise through summary executions. Jacopo de' Pazzi, head of the family, attempted to flee but was captured, tortured, and hanged next to Salviati's decomposing body. His corpse was desecrated in a grotesque display of public contempt.

The Aftermath and Legacy

In the conspiracy's wake, the Pazzi family faced severe retribution. They were banished, their properties confiscated, and their name erased from public records. The Pazzi shield was obliterated from Florence, and anyone bearing the name was forced to adopt a new identity.

The repercussions extended beyond Florence. Pope Sixtus IV, enraged by Salviati's death, excommunicated Lorenzo and his supporters and placed an interdict on the city. Allied troops from Naples and Urbino began assaults on Florentine territory. In a bold move, Lorenzo sailed to Naples, seeking mediation from King Ferdinand I, although the Pope remained unmoved.

The conspiracy inadvertently fortified Medici power, solidifying Lorenzo's influence and prompting political reforms. The episode was immortalized by Poliziano, who penned a vivid account of the events, capturing the high-stakes drama of the Renaissance.

Sources

For further reading on this dramatic historical event, visit the original Wikipedia article.

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CASE TIMELINE
Apr 26, 1478

Assassination Attempt

The Pazzi conspiracy attempts to assassinate Lorenzo and Giuliano de' Medici during High Mass.

Apr 26, 1478

Giuliano Killed

Giuliano de' Medici is killed during the assassination attempt, while Lorenzo is wounded but survives.

Apr 26, 1478

Immediate Arrests

Many conspirators are arrested immediately after the attack, leading to chaos in Florence.

Apr 26, 1478

Executions Begin

Over thirty conspirators are killed on the day of the attack; executions continue for months.

Jun 1, 1478

Pope's Excommunication

Pope Sixtus IV excommunicates Lorenzo de' Medici and his supporters following the assassination attempt.

Oct 20, 1478

Total Executions

A total of eighty people implicated in the Pazzi conspiracy are executed by this date.

Dec 29, 1479

Final Conspirator Hanged

Bernardo Bandini dei Baroncelli, a key conspirator, is hanged after being returned from Constantinople.

Jan 1, 1478

Pazzi Family Banished

The surviving members of the Pazzi family are banished from Florence and their properties confiscated.

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