The subject of this case was born in the country now known as Spain in the mid‑sixteenth century, at a time before writing had become a profession. His father practiced as a barber‑surgeon. This proximity to medicine shaped his unusually sophisticated engagement with bodily knowledge. Across his writings appear detailed observations of wounds, fatigue, diet, aging, disability, and care.

In his early 20s, he entered military service and fought in the Battle of Lepanto against the Ottoman Empire. While confined to bed with a high fever—likely due to malaria—he insisted on participating in battle. During combat, two bullets struck his chest; a third rendered his left hand useless, earning him the nickname “the one-armed man of Lepanto”.

Shortly thereafter, he was captured by pirates and held in captivity for five years. Imprisonment was marked by repeated physical punishments, including flogging and prolonged restraint; at one point, he was bound in chains “from head to foot” for nearly five months. He attempted to escape repeatedly despite worsening reprisals.

After his ransom and return, the subject lived a largely nomadic life marked by precarious government employment. At the age of 35, he fathered an illegitimate daughter who later pursued him in a financial dispute. A marriage at the age of 37 ended in permanent separation less than three years later.

He experienced multiple periods of imprisonment for disputed financial accounts and was once excommunicated during a conflict involving tax collection.

Over his lifetime, the subject produced a substantial literary corpus including novels, short prose narratives, comedies, plays, and major poetic works. He became best known, however, for a single long narrative published in two parts. Its influence was vast resulting in it being translated more widely than any book except sacred scripture.

In later years, the subject reported increasing fatigue and physical decline. Formal medical records are absent, but his own texts supply suggestive evidence. In one passage, he describes the ideal wandering figure as unable to seek a healer at every moment and therefore compelled to become his own physician—especially an herbalist, capable of recognizing in wilderness and desert the plants that heal wounds.

In the prologue to his final work, written shortly before his death, the subject recounts a semi‑fictional conversation with a student that functions as a clinical confession. He describes episodes of overwhelming thirst—so intense that even drinking all the water of the sea would not suffice. No mention is made of excessive urination. He also reports suffering from “dropsy,” a term referring to abnormal swelling of the body caused by fluid buildup under the skin or in body cavities. People with dropsy often had swollen legs, feet, abdomen, or face. Our modern understanding of dropsy is that it was not a disease itself but a symptom of underlying conditions such as heart failure, kidney and liver disease, or malnutrition.

The student responds decisively: the malady is incurable and exacerbated by drinking; fluid restriction and nourishment are advised. The subject acknowledges that others have offered the same counsel yet confesses that he cannot resist drinking in his attempt to quench an unquenchable thirst.

The subject’s final years were characterized by declining health, persistent poverty, and intense literary productivity. Only days before his death, he wrote with striking bodily awareness that his life was nearing its end.

“Yesterday they gave me extreme unction, and today I write this…time is short, my anxieties increase, my hopes diminish…my life is coming to an end; according to my pulse, it will cease on Sunday. Farewell, jests; farewell, cheerful friends; for I am dying, and anxious to see you again soon, happy in the next life.”

He died shortly thereafter at the age of 68, leaving no descendants, but a masterpiece widely regarded as the first modern novel.