On the 800th anniversary of the death of St. Francis of Assisi, founder of the Franciscan order, his body will be displayed for the first time ever in February 2026, at the Basilica of San Francesco. Millions of visitors are expected to converge in the small Tuscan town of Assisi to honor the 13th-century saint.

Francis, who died on Oct. 4, 1226, espoused care for the poor and reverence for the natural world. Those values were reflected centuries later in the actions of Pope Francis. The late pope chose his papal name in honor of the medieval saint’s embrace of the poor and his teachings on the moral responsibility of caring for all creatures on Earth.

As a scholar of medieval religious history, I’m aware that several dramatic episodes near the end of Francis’s life played a decisive role in shaping his legacy as the founder of the Franciscan order. These events also explain why his radical messages around poverty and the environment still resonate today.

Born into a merchant family in the Umbrian town of Assisi, in present-day Italy, around 1181, Francis famously renounced his family’s wealth. One narrative recounts how he shed his garments in the public square, much to the embarrassment of his father. Early biographers described him as “Il Poverello,” or “The Little Poor One.”

In 1209, he founded the mendicant Franciscan order, a religious group devoted to works of charity.

What historians and theologians know about Francis comes primarily from his own writings and hagiographic texts. Hagiography is a form of religious biography that celebrates the virtuous lives of saints, often recounting miracles attributed to them, both in their lifetime and after their death. Devotees often visit their tombs to seek a miraculous intervention. Some of the hagiographies of Francis were written shortly after his death in 1226.

Thomas of Celano, a Franciscan friar who knew Francis personally, wrote “The Life of........

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