By March 1348 the Black Death, having arrived via Genoese ships the previous October, was tearing through Sicilian towns, emptying villages and overwhelming clergy who could no longer perform burial rites. The pandemic, likely caused by Yersinia pestis, would go on to kill an estimated 25 to 50 million people across Europe over the next several years, permanently reshaping economies, labor markets, and religious life.
Sicily was ground zero for the Black Death's European invasion. Twelve Genoese trading galleys, fleeing a plague-ravaged Crimean port, docked at Messina in October 1347, and within weeks the disease had exploded across the island. By early 1348 chroniclers described a landscape of abandoned farms and mass graves, with the disease moving faster than anyone could flee it.
The Franciscan friar Michael of Piazza described boils the size of apples erupting on the groin and armpits of victims, who often died within three days of the first symptoms appearing. Entire households perished together, and dogs and cattle who came near the dead reportedly sickened and died too, deepening the terror that something more than ordinary sickness was at work.
What began in Sicily's ports rippled outward with terrifying speed, reaching Genoa, Venice, and Marseille within months. The demographic collapse that followed would eventually undermine feudal labor structures across the continent, as a drastically smaller workforce gained unprecedented bargaining power, setting in motion social changes that historians still trace centuries later.