The article presents the content of three of the 13 medieval manuscripts found by Mateusz F. Marszałkowski in the Bishop Jan Bernard Szlaga Diocesan Library in Pelplin. The criteria for selecting the material were: the early transmission of a known text (no. 1), the unusual nature of the collection (no. 2), and the previously unknown context of a late medieval monument of the Polish language (no. 3), known in literature (from a single source only). The first of these monuments is the life of Gerard of Cremona, a translator of works from Arabic into Latin (d. 1177). The text is found in a codex dating from the last quarter of the 13th century and belongs to a small group of the oldest monuments (shelfmark 61 (88)). The second of the presented codices contains a text specified in the table of contents as „Excerpta de collectis diversarum materiarum magistri Mathei de Cracovia, doctoris sacre theologie” (Akc. 3). This is the only known copy of this work, although there are many indications that even in the Middle Ages its authorship was attributed to one of the greatest theological authorities in Central Europe: Matthew of Krakow. The author of this text was actually the Czech theologian Stefan of Roudnice. Nevertheless, the manuscript undoubtedly contains an interesting collection of texts used by clergy in the pastoral care. The third manuscript (Akc. 1) contains sermons for the liturgical year (sermones mixti). These sermons were written in the Kingdom of Poland in the 15th century and were intended to be delivered in Polish audience. This is evidenced by the glosses in Polish, the sermon on St. Stanislaus, and the emphasis on the importance of the Polish state, referred to as „Corona Polonia”. What is more, this manuscript contains the only known version of the work „Oto usta już zamkniona: (Behold, my mouth is now closed) and previously unknown fragments of the Polish Marian song „Mocne Boskie tajemności” (Mighty Divine Mysteries), woven into the sermon. The characteristics of individual manuscripts are accompanied by editions of selected texts.
The article provides an overview of the historiography concerning the life and works of Ludolf of Żagań (1353–1422), who served as abbot of the local monastery of Canons Regular. It examines the editions of Ludolf’s writings, including the monastic chronicle („Catalogus abbatum Saganensium”) and treatises on the Great Western Schism („De longevo schismate”, „Soliloquium schismatis”, „De schismate Robertino”), outlining the current state of research on these works. The article underscores Ludolf’s importance as a chronicler, reformer, and conciliarist, while also highlighting gaps in research on his lesser-known works and the need for new editions of his writings. Furthermore, the study aims to draw attention to the significance of Ludolf’s works, which (particularly in the case of his sermons) remains largely underinvestigated.