Dictionarium
Morale
15th Century
“a number of pictures of trees roughly drawn with large leaves or circular fruits. There are one or more of these ugly trees on each page […] There is no text apart from these diagrams. The hand is bad." [1]
This catalogue entry provided by M.R. James for our ‘Dictionarium Morale’ (Clare College, Fellows’ Library, MS 20) appears distinctly unpromising, but could there be more to this late 15th century manuscript than meets the eye?
Although ‘ugly’ is a strong word, this book is indeed composed entirely of tree diagrams. The trunk bears a core concept (“peace,” “life of Christ,” etc.), which is then expanded upon in the upper branches, leaves, and fruits. Some of the more ‘floral’ shapes leave space only for a single word per petal, while the largest fruits hold entire paragraphs.
The use of tree diagrams was already firmly established in manuscript practices by the time the ‘Dictionarium Morale’ was made. One of the oldest documented uses was in genealogy – a medieval example being the tree of Jesse, showcasing Christ’s ancestry.[2] By the early 12th century, they were also used as hierarchical representations of the different Christian virtues and vices.
Finally, trees could serve as means to memorise information in a more digestible, searchable form.[3] This would be particularly helpful for homiletic compilations – books designed to help preachers compose their sermons – and this may be what we are witnessing here.[4] Such a use would explain the appearance of references on some leaves, the general moral and religious topics of the manuscript, as well as the subject of the longest piece of marginalia: a passage on the early life of Christ.
However, we cannot say for certain what this book was used for, knowing very little about its pre-College history. We can tell from watermarks that its paper is akin to an example found in France and Italy in the last quarter of the 15th century,[5] however, this does not indicate that the manuscript was produced in either of these countries, as paper travelled steadily from the continent into England at the time.[6]
Early former owners include a ‘William,’ and a ‘Thomas Ellis’ (who added the handwritten anecdote on the folio illustrated above). Another inscription, ‘maister Watkinson,’ is more ambiguous – did Watkinson himself add it, or did a pupil decide to immortalise him on fol.153? We have not, thus far, been able to identify any of these men formally – but if their handwriting looks familiar, please do get in touch!
Another clue, already highlighted by M.R. James, is a potential Yorkshire connection: there is a copy of an early 16th century legal document on the last flyleaf concerning someone living at Colling [i.e. Cowling], in the county. On the reverse of the document, we can find the 17th century donation inscription from the scholar who presented this book to the College: Barnabas Oley (1602-1686).
Oley matriculated at Clare in 1618, and was made a Fellow in 1623, until his expulsion in 1644 when, as a royalist, he allegedly failed to show himself to the ‘Committee for Scandalous Ministers.’ He would not return to Clare until 1660. Having been re-established into his posts, he made the decision to leave the College again in 1663, but despite this he was still considered as potential new Master of the College in 1678.[7] In addition to his gift of books to the College, his will included 100 marks (over two years’ worth of a skilled tradesman’s wage) for the building of a new College Library.[8]
Oley’s gifts are emblematic of the place of books and libraries in College life. Despite the age of the manuscript at the time it was presented, the location of the inscription (at the back) and its lack of the flourishes we sometimes find in our other books seem to indicate that it was not there for prestige, but for use. For young College members to continue engaging in learning practices that had begun centuries before they came to Clare. Now, over three hundred years later, it carries Barnabas Oley’s legacy as a man who placed scholarship at the heart of his life both within and beyond Clare College.
[2] J.A.H. Williams. “The earliest dated tree of Jesse image: thematically reconsidered,” Athanor XVIII (2000), 20. 17-23.
[3] J. Higuera Rubio, “The Evolution of Relational Tree-Diagrams from the Twelfth to Fourteenth Century: Visual Devices and Models of Knowledge” and N. Virenque ‘From Forest to Orchard: Arboreal Areas as Mnemotechnic Supports in the Middle Ages,” in Trees as Symbol and Metaphor in the Middle Ages, eds. M.D.J. Bintley & P. Salonius (Boydell & Brewer, 2024), 132-153 and 154-183.
[4] M. Franklin-Brown, “The Speculum Maius, Between Thesaurus and Lieu de Mémoire,” in Memory and Commemoration in Medieval Culture, eds. E. Brenner, M. Cohen, & M. Franklin-Brown (Routledge, 2013), 143-162.
[5] Briquet 13041.
[6] C. Bozzolo & E. Ornato. Pour une histoire du livre manuscrit au Moyen Age : trois essais de codicologie quantitative (Éditions du Centre national de la recherche scientifique, 1983). As cited by O. Da Rold. Paper in medieval England: from pulp to fictions (Cambridge University Press, 2020), 87-92. See also the introduction to The Paper Trade in Early Modern Europe, eds D. Bellingradt and A. Reynolds (Brill, 2021)
[7] The title went, instead, to Samuel Blythe (d.1713).
[8] “Oley, Barnabas (bap. 1602, d. 1686), Church of England clergyman,” E.R. Clarke, accessed January 26, 2026, https://www.oxforddnb.com/view/10.1093/ref:odnb/9780198614128.001.0001/odnb-9780198614128-e-20704. On the gift, see also W. Telfer, "The College Library in the Seventeenth Century." The Clare Association Annual. (Cambridge University Press, 1938),17–21.
