International audienceThis article discusses the 'borrowing' of a Latin sermon by Gilbert of Tournai, OFM (d. 1284) into the anonymously composed Vita of a Spanish saint. The sermon, which is part of the famous ad status series by Gilbert (In synodis, 3 -- RLS 192), has been incorporated without reference to Gilbert into the Vita Braulionis (BHL 4810) and is presented by the hagiographer as a sermon given by Saint Braulion himself, offering an interesting example of circulation of the materia praedicabilis not only between sermons but also between genres. The discovery of this reuse sheds new light on the Vita Braulionis: it sets a new terminus post quem for the Vita and might be a clue to a mendicant milieu. Regarding the borrowed sermon, ...