In memoriam Albert Derolez (1934-2026)

Corpus Christianorum mourns the passing of Professor Albert Derolez, the distinguished Belgian historian of the book and medievalist whose scholarship transformed the study of medieval manuscripts, book collections and intellectual culture.

Internationally renowned for his lifelong research on the Liber Floridus and its author, Lambert of Saint-Omer, he was widely regarded as one of the foremost authorities on the medieval book and manuscript tradition.

In addition to his work as curator and catalographer of the medieval manuscripts at Ghent University Library, Professor Derolez taught palaeography and codicology at the university of Brussels, held visiting professorships at UC Berkeley and the Rare Book School, served as president of the Comité international de paléographie latine, and contributed substantially to the cataloguing and study of the medieval manuscripts preserved in Yale’s Beinecke Rare Book and Manuscript Library. His tireless dedication also brought to completion the seven volumes of the Corpus Catalogorum Belgii (1994-2016), an indispensable resource for the study of medieval libraries in the Southern Low Countries.

From 2002 onwards, Albert Derolez served as a member of the Corpus Christianorum Scientific Committee (“Wetenschappelijk Comité”). In that capacity, he placed his unparalleled expertise in the history of the book, manuscript studies, palaeography and codicology at the service of the Latin series of the Corpus Christianorum. Even after stepping down from the committee in 2013, he remained a committed and keenly interested honorary member of the Corpus Christianorum community.

Albert Derolez devoted his career to exploring, documenting, and interpreting every aspect of the medieval book, from its script and material form to its transmission and cultural context. His contributions to palaeography reached their culmination in the landmark Palaeography of Gothic Manuscript Books (Cambridge, 2003), that has become a standard reference for scholars worldwide. His research in codicology likewise left a lasting mark, notably through Codicologie des manuscrits en écriture humanistique sur parchemin (1984).

His interest in textual transmission and intellectual history also led him into the field of critical editing. For Corpus Christianorum, he prepared the critical edition of Hildegard of Bingen’s Liber divinorum operum on the basis of a Ghent manuscript. This edition was preceded by his two-volume edition of the letters of Guibert of Gembloux (CC CM, 66-66A, 1988-1989), Hildegard's last secretary, prepared in collaboration with Dom Eligius Dekkers, the founder of Corpus Christianorum.

At the heart of his scholarly life, however, stood the Liber Floridus (1121). His doctoral research on Lambert of Saint-Omer’s celebrated encyclopaedia, the autograph of which is preserved in Ghent University Library, gave rise to a remarkable series of publications spanning more than half a century, culminating in The Making and Meaning of the Liber Floridus (2015), a masterful synthesis of a lifetime's engagement with the text, its structure, and its rich visual programme.

Even in the final years of his career, his enthusiasm for the Liber Floridus remained undiminished. In 2021, he contributed to a collective volume exploring conceptions of time and the transmission of scientific knowledge in the work. Four years later, he published Liber Floridus: De oudste geïllustreerde encyclopedie (1121), a richly illustrated book intended for a broader readership. He proudly presented the volume in Ghent’s Book Tower, home to the original manuscript and a place inseparably linked to his own scholarly legacy.

Albert Derolez was, in the fullest sense, a librorum studiosus: a lifelong student and lover of books, as the title of the Festschrift presented in his honour in 2018 so aptly proclaimed. His scholarship was marked by extraordinary erudition, meticulous attention to detail, and an enduring curiosity about the material and intellectual worlds of the Middle Ages.