Mateo’s quill trembled. Outside, the wind carried the smell of smoke and rosemary. A rider had come at dusk — a ragged Templar in disguise, for the Order had been dissolved decades ago, yet some still roamed the roads.

Mateo dipped his quill in oak gall ink and wrote, his letters precise as pike formations: “In the siglo XIII, the cross was raised high. In the siglo XIV, the cross bends under plague, schism, and the longbow’s rain. Yet the peasant sharpens his scythe. The merchant counts his gold in Bruges. The university in Salamanca lights its lamps. A new world stirs in the womb of the old.” The knight asked, “You write history as it happens?”

“Brother,” the knight whispered, clutching a sealed parchment. “The King of France is dead. The Pope has fled to Avignon. And in the East… Acre has fallen. This is the end of an age.”

In the year of Our Lord 1348, as the Black Death crawled across the plains of Navarre, Brother Mateo de Ávila sat in the scriptorium of the monastery of San Pedro de Cardeña. Before him lay a half-finished manuscript: Historia medieval II: siglos XIII-XV — his life’s work, commissioned by the Abbot to chronicle the age of kings, crusades, and the crumbling of old Christendom.

That night, the knight left. Mateo finished the final folio, then closed the book. He never knew if the manuscript survived the plague.

Mateo smiled. “I write so that in the siglo XV, someone will know that we did not despair. That while kings fought and angels wept, a monk in a cold scriptorium believed the story was not over.”

Centuries later, in a digital archive, a student would search for a PDF of that very text — not knowing that the real story was written in sweat, faith, and the ink of a dying man who refused to let the Middle Ages end without a witness. If you’d like a factual summary of the key events of the 13th–15th centuries (late medieval Europe), let me know and I’ll write that instead.