A peculiar and under-explored event in Robert Grosseteste's (d. 1253) life is that of his supposed dream-vision in 1249, reported posthumously and in only one source, the Lanercost chronicle. 1 The vision foreshadows the loss of Damietta in Egypt the following year, during the Seventh Crusade (1249-54) under the leadership of Louis IX. The parallels to St.Francis's vision at Damietta in 1219 during the Fifth Crusade (1215-21) are immediately noticeable yet the vision has remained largely dismissed as an afterthought in the scholarship of Grosseteste. Considering that Grosseteste wrote, in 1236, what has been described by Michael Lower as "surely the best defence of the cross petition a crusader ever had," in addition to his association with the Franciscans and his relationship with Richard, earl of Cornwall, brother of Henry III and nephew of celebrated crusader Richard I and a (if not the) principal leader of the Baron's Crusade, it is surprising that there is no fuller account of his support for the movement; rather there are piecemeal references to certain acts of interference such as that noted by Lower. 2 This paper seeks to establish Grosseteste's position on the crusades, in light of a thoroughly Franciscan influence, beginning with Damietta.