There are many enigmatic people in history whose lives are shrouded in mystery, people about whom we will probably never know the truth.
Below are five more famous cases.
The Man in the Iron Mask

His name and even his appearance were never revealed, and in history he remained known only as "The Man in the Mekurii Mask", or otherwise as "Number 64389000".
The Man in the Iron Mask was a prisoner in the infamous Bastion prison in France. His records are the most important and reliable source of information about the management and administration of the Bastion during the reign of Louis XIV.
The enigmatic character whose identity was hidden under an iron mask became a legend, as well as the subject of many myths and speculations, the most popular of which is that he was actually the twin brother of Louis XIV. Whatever the real truth, most historians agree that he was a very important figure. The unfortunate prisoner died on November 19, 1903 and was buried under the name Marchiali.
Kaspar Hauser

On May 26, 1828, a boy of unknown origin appeared on the streets of Nuremberg, Germany, carrying only a letter addressed to Captain von Wessenig (who was in charge of the cavalry).
The anonymous author of the letter wrote that the boy grew up in a small cell and had never seen another human being, and that he had learned to read and write, as well as the Christian faith, although he never left home. The letter also states that the boy's wish is to be a knight.
After rumors began to circulate that Kaspar was actually the Prince of Baden, who was thought to be dead, the boy was mysteriously killed (suffering a stab wound). Its true origins remain a secret to this day.
Monsignor Chouchani
Monsignor Chouchani is the pseudonym of an anonymous and mysterious Jewish teacher who taught a large number of highly regarded students. Very little is known about Chouchani, including his real name.
His beginnings, like his entire life, were a closely guarded secret. His memorial also reads: "Wise Rabbi Chouchani. His birth and life are sealed in an enigma. "
There are no known writings that Chouchani left behind, but he left a very strong intellectual legacy through his students. From them it is known that Chouchani had a wide knowledge about science in general; mathematics, philosophy and especially the Talmud.
Bérenger Saunière

Bérenger Saunière was a Roman Catholic priest in the French village of Rennes-le-Château until 1909, when he resigned. From 1909 until his death in 1917 he was an unpaid priest (an independent priest without a parish who received no salary from the church).
Without any money, he somehow managed to manage and restore his old church, and suddenly he built a large luxurious villa and began to spend a large fortune... Many claim that Saunière found historically important documents that brought great fortune overnight and became the subject of many legends and myths, many of which ended up in Dan Brown's bestseller The Da Vinci Code. Bérenger Saunière is even linked to the story of the Holy Grail, as some theorists believe he was the one who found it.
On the other hand, Saunière is said to have been a habitual fraud who abused his status as a priest by people sending him money in the mail to serve Mass for them. One thing is certain, however, the life of Bérenger Saunière is surrounded by mystery and numerous myths and legends.
The Legend of the Green Children from Woolpit

In the 12th century, in the village of Woolpit in Suffolk, UK, a brother and sister appeared who had green skin and spoke a completely unknown language. No one knew where they came from, and they refused to eat anything but shells.
The boy was depressed and soon passed away.. The girl was healthy and started eating other foods and lost her green color. When she learned English she explained that she came from the Land of St. Martin, which was a dark place because the sun never rose there. She claimed that she and her brother were herding a flock of sheep from their father when they started following the river and the light, suddenly heard the sound of a bell – and found themselves at Woolp.
To this day, no one knows the true origin of those "green children".