The Ordered Universe project is proud and delighted to host the online edition and translation which represents the core of Jennifer Moreton’s work, assembled and compiled by Charles Burnett, Immo Warntjes and Philipp Nothaft, together with Philipp’s introductory essay. The Compotus Ecclesiasticus was attributed to Grosseteste in the later Middle Ages, although it is not now considered part of his authentic canon: the Compotus correctorius is now considered his only genuine work in this genre. A full edition of the Compotus Ecclesiasticus will be prepared by Alfred Lohr in collaboration with Philipp. For the time being, the introduction and text below stand to honour Moreton’s fundamental research in this area.