Date:    *transitional style, probably under Abbott Lawrence between 1270 and 1285 (H79);  

There were possibly 5 lights (HOPE):  a large central rose or traceried circle, with a smaller one at either side lower down.  Over 300 square feet of glass (WARD).

The mouldings of the arch are very fine.  The jamb shafts are plain at the exterior, floriated at the interior.
In the angles of the arch are triple vaulting-shafts with floriated capitals, light as per wooden ceiling (H79).  Capitals of shafts are rather low and there is no vaulting above, so both roofs were timber (WARD).  The original slope of the gable end and earlier roof can easily be traced on the east face.  There is a fragment of coping, with dog-tooth, indicating the points where the slopes arose.

The East Window, part 1

Reconstruction of the east window and roof (prior to the addition of the clerestory) by Stuart Harrison,
Ryedale Archeological Services,
2008