On this day, Peterborough Abbey received a licence to crenellate the gate of the abbey and two chambers lying between the gate and the church. It was the exterior of the King's Lodgings and the Knights' Chamber - which Abbot Godfrey had recently erected over the palace gateway - that received the crenellations, which remain to this day. (Mellows, W.T., The King's Lodging at Peterborough, Peterborough Natural History Society, 1933)

Taken from The Peterborough Book of Days by Brian Jones, The History Press, 2014.