In our research in the British Library's medieval collections, we have identified a previously unnoticed document that provides fresh insights into the survivors of the outbreak of plague known as the Black Death (1346–53). The document – a scrap of parchment inserted into an account of the Ramsey Abbey manor of Warboys in Huntingdonshire – records how much time peasants were absent from work when struck down by the plague . It also reveals the names of those who survived and how long their