How handwriting analysis proves the 1665 Marci letter is a modern forgery by John Frederick Lewis
For over a century, scholars have accepted the 1665 letter from Johannes Marcus Marci to Athanasius Kircher as authentic documentation of the Voynich Manuscript's provenance. This letter, found with the manuscript when Wilfrid Voynich "discovered" it in 1912, has been the cornerstone of the traditional Prague provenance story—linking the manuscript to Georg Baresch, Emperor Rudolf II, and Roger Bacon.
Through forensic handwriting analysis, we can now definitively prove this letter is a forgery.
Preserved in the Archives of the Pontificia Università Gregoriana in Rome (APUG 557, fol. 127r), this letter is unquestionably in Marci's own hand. Written to Athanasius Kircher on September 12, 1640, it demonstrates Marci's characteristic writing style:
📜 Authenticated Marci 1640 Letter (APUG 557, fol. 127r)
This is Marci's authentic handwriting from 1640, showing characteristic straight/horizontal baselines.
Full forensic annotated version with detailed baseline analysis available in the Members Library section.
Key Feature: STRAIGHT BASELINES ✓
Found with the Voynich Manuscript (Beinecke MS 408A), this letter is dated August 19, 1665/1666 and purports to be from Marci to Kircher, sending the mysterious manuscript. However, researchers have long noted anomalies:
🔥 Disputed 1665 "Marci" Letter (Beinecke MS 408A)
This letter shows DIFFERENT handwriting from the 1640 authentic Marci letter, with distinctive upward-arching baselines.
Full forensic annotated version with detailed baseline curve measurements available in the Members Library section.
Key Feature: ARCHING BASELINES ✗ (Proves forgery!)
Previous researchers noted that this letter was written by a "scribe" due to Marci's failing eyesight. However, our forensic analysis reveals something far more sinister: this is not 17th century handwriting at all—it's a 20th century forgery.
In forensic document examination, the "baseline" refers to the invisible line upon which letters sit when writing. Most people write with relatively straight horizontal baselines, though natural variations occur. However, consistent baseline curvature patterns are highly distinctive unconscious motor habits that persist across all of a person's writing.
Baseline Pattern: Straight to slightly downward sloping
Characteristics:
Baseline Pattern: Consistent upward arching (convex curve)
Characteristics:
The authentic Marci does NOT write with arching baselines.
The 1665 letter DOES exhibit arching baselines.
Therefore: The 1665 letter was NOT written by Marci or any 17th century scribe working for him. This is a different writer entirely—a modern forger attempting to create a period-appropriate document.
John Frederick Lewis (1860-1932) was a prominent Philadelphia manuscript collector, philanthropist, and dealer who had extensive dealings with Wilfrid Voynich in the early 1900s. Lewis:
Catalog cards from the Petrus Beckx collection (the Jesuit Superior General who hid manuscripts in 1873) contain notations in Lewis's hand, including:
"in Free Library (John F. Lewis Coll.)"
Analysis of these Lewis notations reveals:
📝 Lewis Handwriting Sample (Beckx Catalog Card)
John Frederick Lewis's notation on a Jesuit manuscript catalog card shows the SAME upward-arching baseline pattern as the forged 1665 letter.
Full comparison with overlay analysis will be available in the Members Library section.
Key Feature: ARCHING BASELINES ✗ (Matches the forgery!)
Baseline: Straight/horizontal ✓
Status: Authenticated
Baseline: Upward arching ✗
Status: FORGED
Baseline: Upward arching ✗
Status: Matches forgery
John Frederick Lewis's unconscious writing habit (upward-arching baselines) appears in:
But does NOT appear in:
CONCLUSION: John Frederick Lewis forged the 1665 Marci letter circa 1910-1912.
Examination of marginal annotations on Voynich Manuscript folios (particularly folio 67v) reveals the SAME upward-arching baseline pattern, suggesting that Lewis also added fake "historical" annotations to the manuscript itself to enhance its apparent provenance.
📖 Voynich MS Folio 67v (Marginal Annotations)
Marginal annotations on this folio show the SAME upward-arching baseline, indicating Lewis added fake "historical" notes to the manuscript itself.
Full annotated version identifying all Lewis marginalia will be available in the Members Library section.
Key Feature: Modern annotations with ARCHING BASELINES
Ethel Voynich's sealed letter states the Cipher MS was purchased "in or about 1911"—contradicting Wilfrid's public claim of 1912 discovery
Lewis actively acquiring manuscripts from the same Jesuit Beckx collection that contained the Voynich MS. Lewis and Voynich conducting business together during this period
Voynich publicly "announces" discovery of manuscript at Villa Mondragone with convenient "provenance letter" already attached
Established that "Voynich's story that he discovered these manuscripts himself, in chests of which the guardians were unaware of what they contained, is definitely not true"
A mysterious manuscript with unknown origins would be interesting but difficult to sell at a premium price. However, a manuscript with a romantic provenance story connecting it to:
...would be worth a fortune. Creating this provenance through a forged letter would transform an interesting curiosity into a priceless treasure.
The forensic handwriting analysis stands on its own merit as court-admissible evidence. But extensive research into the letter's provenance, content, and physical characteristics has revealed seven additional smoking guns that independently prove modern forgery.
Each piece of evidence below is sufficient to raise serious doubts. Together, they form an ironclad case.
Wilfrid Voynich claimed he "didn't notice" the Marci letter at first when he purchased the manuscript around 1911-1912. This claim is extraordinarily implausible for a professional manuscript dealer.
The "delayed discovery" claim suggests the letter didn't exist when Voynich first acquired the manuscript. He needed to explain why he didn't mention it to people who had already seen or heard about the MS. The letter was created later, requiring the fiction that he "just noticed it."
The Villa Mondragone housed the precious Kircher Carteggio - a meticulously maintained collection of over 2,000 letters including extensive correspondence with the renowned Athanasius Kircher. The Jesuits treasured this archive.
The letter was never in the Villa Mondragone archive. It was created later to establish a false provenance. The Jesuits couldn't have let it "slip out" because it was never there in the first place.
This is perhaps the most damning evidence of all. Georg Baresch, Raphael Mnišovský (Kinner), and a younger Marcus Marci wrote to Athanasius Kircher about a mysterious manuscript for over 25 years (1639-1665). They desperately wanted Kircher's help deciphering it.
ALL of this "explosive information" appears for the first time in the final 1665 letter!
The forger had to explain why this "explosive information" never appeared in the authentic Baresch/Kinner/Marci letters that were actually in the Carteggio. Solution: Date the forged letter 1665 - after Baresch's death in 1662. This way, it couldn't be compared to earlier authentic correspondence from Baresch, and could be presented as Marci's "final revelation" on his deathbed.
But this creates an impossible scenario: Why would vital provenance information be withheld for 25+ years?
Latin scholars who have studied the Marci letters have noted something peculiar: the 1665 letter's Latin is notably different from Marci's authenticated earlier correspondence.
A modern forger (likely John Frederick Lewis working with Voynich, or someone in their circle) would have had some Latin knowledge - enough to create a plausible-looking letter - but not the natural fluency of a 17th-century scholar. The result: awkward phrasing that differs noticeably from Marci's authentic writing style.
Before manufactured envelopes, 17th-century letters followed specific, well-documented folding conventions for delivery. The 1665 "Marci" letter violates ALL of these conventions in ways that make no historical sense.
Method 1 - Self-Envelope:
Method 2 - Wrapper Envelope:
All authentic letters in the Kircher Carteggio follow one of these patterns with clear, sensible fold lines and seals.
The letter was likely created from repurposed blank antique paper that Voynich had access to. This is documented fact: Voynich sold antique blank paper from book end-sheets to the famous etching artist James McBey.
The forger took an old sheet (possibly already folded and sealed for some other purpose), trimmed it down, added new folds to approximate a letter format, and wrote the forgery. The result: physical characteristics that don't match ANY period letter convention.
It has long been acknowledged by scholars that the signature on the 1665 Voynich letter does NOT match Marcus Marci's authenticated signatures from his earlier letters. The standard explanation: an elderly, ill Marci had a scribe write and sign for him.
This explanation completely collapses under forensic examination.
There is another letter in the Kircher Carteggio dated September 10, 1665
Allegedly written by the same "scribe" who wrote the Voynich letter...
Impossibly. Perfectly. Identical.
This is direct, physical evidence of mechanical forgery.
The forger traced the signature and date from the authentic September 10, 1665 letter, but then made modifications:
The signature and date were mechanically copied/traced from the authentic September 10, 1665 Marci letter in the Carteggio, then manipulated to create a different (but suspiciously similar) date. This is irrefutable proof of forgery.
Wilfrid Voynich didn't just have opportunity to create a forged provenance letter - he had the perfect setup: means, motive, opportunity, and direct access to the source materials needed.
Joseph Strickland - Head of the Villa Mondragone Jesuit College
Wilfrid Voynich - Professional manuscript dealer and close personal friend of Strickland
1908-1911 - Both men in Florence, Italy during overlapping period
The Kircher Carteggio was housed AT the Villa Mondragone where Strickland was in charge.
✓ MEANS:
✓ MOTIVE:
✓ OPPORTUNITY:
This was not some random coincidence or mistake. Voynich had everything needed to create a forged provenance letter: access to source materials, blank period paper, skilled forger (Lewis), knowledge of what the letter needed to say (based on Baresch letter), and a massive financial incentive.
The forgery was a deliberate conspiracy to create a false "Roger Bacon" provenance that would transform a mysterious manuscript into a priceless treasure.
EACH LINE OF EVIDENCE STANDS INDEPENDENTLY
Together, they form an ironclad, irrefutable case for modern forgery.
The 1665 "Marci" letter is a fabrication created circa 1910-1912
to establish a false "Roger Bacon" provenance for financial gain.
If the 1665 Marci letter is a forgery—and the forensic evidence proves it is—then the entire traditional Prague provenance narrative collapses:
The Marci letter is the PRIMARY source claiming Baresch owned the manuscript. With the letter proven fake, there is no credible evidence Baresch ever possessed it.
While Baresch's 1639 letter to Kircher about "a mysterious manuscript" exists, there is no proof this refers to the Voynich MS. The forged Marci letter was created to make this connection explicit.
The Bacon connection comes ONLY from the forged Marci letter, where it's presented as third-hand hearsay: Marci heard from Raphael (who died in 1644) who supposedly heard it from someone about Rudolf II (who died in 1612). This "evidence" is worthless if the letter is fake.
The claim that Rudolf II purchased the manuscript for 600 ducats comes exclusively from the forged letter. No independent documentation exists.
Every element of the traditional narrative—Baresch's ownership, Marci's inheritance, the gift to Kircher, the Bacon attribution, the Rudolf connection—depends on accepting the authenticity of the 1665 letter.
If the 1665 Marci letter is a forgery, then we have NO reliable documentation of the manuscript's location or ownership before Wilfrid Voynich acquired it in 1911.
The manuscript's true provenance must be sought elsewhere—in actual archival documentation, not in forged letters created to manufacture a romantic history.
While the forged Marci letter leads to a dead end, actual archival research reveals a comprehensive, documented provenance chain:
The Voynich Manuscript was held at Gidea Hall in Essex, England from approximately 1516 to 1912, passing through documented owners with traceable connections:
This provenance is supported by:
For over a century, scholars have based their research on a forged document. Every theory, every analysis, every interpretation that relied on the Prague provenance must now be re-examined in light of this forensic evidence.
The Voynich Manuscript deserves to have its true history told—not a fabricated romance created to increase its market value.
View Complete Research See All EvidenceHigh-resolution forensic annotated versions of all letters with detailed baseline analysis, measurements, and comparative overlays are available to members.
🔐 Access Members LibraryThe forensic evidence is clear and scientifically sound:
This discovery requires a fundamental reassessment of everything we thought we knew about the Voynich Manuscript's history. The true provenance—documented at Gidea Hall, Essex from 1516 to 1912—deserves serious scholarly attention.
The truth has waited over a century. It's time to tell the real story.
Research by Secrets of the Cipher
All source documents are available in public archives. This research is presented in the interests of historical accuracy and academic integrity.