London, British Library MS Royal 2 B VII, f. 228v (bas de page). Dunstan is shown as a bishop, in prayer at Canterbury, having been led by the Virgin Mary into her chapel. The image is not directly related to the text on the page (part of Psalm 106), but is part of a huge set of illustrations of medieval miracles of the Virgin. More information about the manuscript, and images of many more of the 464 bas-de-page tinted drawings, here. More about the Lady Chapel in the undercroft of Canterbury Cathedral here; not illustrated, but here is a photo of the chapel.
Here's a recent (Feb 2020) lecture about archaeology at Canterbury Cathedral: https://www.youtube.com/watch?v=PufVbf7Wcz4
#patronsaint
