Oxford, GB, Bodleian Library, Lyell 84 Date:1200 -1250 Dimensions:Unknown xUnknown Type:Trees of Christ Shelfmark:Lyell 84 Provenance:France Contents:Septenarium pictum, derived at least in part from Hugh of St. Victor, De quinque septenis. Bibliography:Cleaver, Laura. “Past, Present and Future for Thirteenth-Century Wales: Two Diagrams in British Library, Cotton Roll XIV.12.” Electronic British Library Journal, 2013, 1–26. Online Images: External link