In the summer of 2024, researchers from three independent laboratories published the results of a genetic analysis that had been building for years. At its center were locks of hair from a teenage boy who appeared in Nuremberg, Germany, in 1828, claiming he had spent his entire childhood in a windowless cell. The question the researchers were trying to answer was nearly two centuries old: was Kaspar Hauser the secret hereditary prince of the Grand Duchy of Baden, stolen from his royal cradle as an infant and hidden from history? The study’s conclusion was clear. His mitochondrial DNA did not match the Baden royal line. The theory that had generated books, films, forensic investigations, and court-level historical debates for nearly two hundred years was not supported by the genetic evidence.
What the study could not answer — who Hauser actually was, where he came from, what happened to him as a child, and who stabbed him in a garden in December 1833 — remained as open as it had ever been.
—
## A Strange Arrival in Nuremberg
The story begins with a letter and a teenage boy who could barely speak.
On May 26, 1828, citizens of Nuremberg encountered a youth wandering the streets, confused and barely coherent. He was approximately sixteen years old. He could say only a few words, repeated like fixed phrases. One of them was his name: Kaspar Hauser. Another was his expressed wish to become a cavalryman, as his father had been.
He was carrying an envelope containing two letters. Neither was signed. The first, written as though from a laboring man, claimed that the boy had been left in his care on October 7, 1812, shortly after birth. The letter’s author said he had kept the child hidden, taught him to read and write in a limited way, and was now delivering him to the authorities. The letter suggested the captain of the cavalry take the boy in — or hang him in a chimney if he could not be used. The second letter, written in the same hand despite claiming to come from his mother, stated that his father was a deceased cavalryman in the 6th Regiment.