Medieval Masterpiece: The Clermont-Tonnerre Grail Auction
By Darren Smith, Arts Reporter
May 27, 2026
In the shadowed halls of medieval imagination, where knights quested for glory and sorcerers whispered prophecies, a radiant treasure has emerged from seven centuries of private stewardship. A late 13th-century illuminated manuscript, known as the Clermont-Tonnerre Grail, is set to captivate collectors and scholars alike when it heads to auction at Christie’s London on July 8.
Crafted around 1290–1310 in Metz, northern France, this extraordinary volume on vellum pulses with 126 miniature illustrations adorned in burnished gold leaf. Attributed to the skilled hand of the Master of the Liège Apocalypse, it brings to life foundational tales from the Old French Lancelot-Grail cycle—also called the Vulgate Cycle. Readers encounter the mystical origins of the Holy Grail, the diabolic birth and shape-shifting exploits of Merlin (including rare depictions as a stag or other forms), the rise of young King Arthur, and the valorous deeds of the Knights of the Round Table.
Eugenio Donadoni, Christie’s Senior Specialist in Medieval and Renaissance Manuscripts, describes it as one of the greatest rediscoveries in the field: “This is a beautifully and richly illustrated manuscript of one of the greatest of all medieval romances.” Only two other complete texts from the cycle are known in private hands, making this the earliest and most profusely illuminated example available for public sale. Its unique textual variations, including an abridged and reworked ending to the Suite Vulgate du Merlin, offer fresh scholarly insights.
The manuscript’s illustrious provenance traces back through European nobility and bibliophiles, including 15th-century Metz owners, the Comte de Clermont-Tonnerre, the obsessive collector Sir Thomas Phillipps, and French industrialist Jean Lebaudy. Never publicly exhibited or fully studied until now, it has remained a whispered legend among connoisseurs.
Experts anticipate fierce bidding, with an estimate of £1.5 million to £2 million ($2 million–$2.6 million). Comparable works, such as the Rochefoucauld Grail sold for £2.3 million in 2010, highlight strong demand for exceptional medieval artifacts. Roughly 200 copies or fragments of the Arthurian saga exist in institutions worldwide, yet complete, privately held illuminated examples of this caliber are vanishingly rare.
Beyond its artistic splendor—square-jawed figures with distinctive red-dotted cheeks glowing against luminous gold—the Clermont-Tonnerre Grail embodies the enduring power of storytelling. As Merlin prophesies within its pages, the tales will “forever be told and gladly heard for as long as the world lasts.” Scholars hope it finds a home in a public collection, where it can advance research on Arthurian legend, medieval patronage, and cultural transmission.
This sale arrives amid renewed global fascination with medieval heritage, bridging ancient myth and contemporary wonder. Whether acquired by a museum or visionary collector, the manuscript promises to inspire new generations drawn to tales of chivalry, magic, and the eternal quest for something greater.
Discover more about this legendary artifact, view high-resolution images, and register to follow the auction here. Don’t miss your chance to witness history—visit Christie’s website today for previews, condition reports, and bidding details.
Cover image has been Ai generated
