Building Upon the Stones of Our Past

How Post-Medieval Cantabrigians Used Priory Stones to Build Their Homes

The Barnwell Priory existed as a monastery just north-west of our excavation site until 1538 when it was destroyed during the Dissolution of the monasteries. After that time the priory buildings were left in ruins as the city of Cambridge expanded around it.

Our excavation of the post-medieval buildings on site uncovered the use of limestone, chalk, and sandstone blocks as footings for the brick walls of these buildings. While chalk probably dominates our finds, the next numerous is Barnack limestone.  

These limestone blocks were carved very specifically to be used for building something other than post-medieval footings. Some were shaped to have large smooth, curved edges, while multiple others have notches or holes carved into their sides which would have allowed them to fit together in very specific ways. The stones were not re-shaped to fit within the post-medieval walls, but more used for their size (they are extremely heavy!), and manoeuvred into place as strong footings to build on top of. These blocks are most likely the remnants of medieval Priory buildings that were destroyed during the Dissolution, and then re-purposed into post-medieval buildings. Barnack limestone was quarried in central England, near Barnack. This type of limestone was used extensively for English buildings throughout the ages; many of the oldest colleges in Cambridge were built with Barnack limestone. However, the quarry was exhausted by the 16^th Century. This can tell us that any buildings that were using Barnack limestone were built before the exhaustion of the quarry.

While we know the post-medieval buildings on site were standing as of 1888, they would have been built some time before that, taking full advantage of the local stone left from the Priory.

It looks like recycling was a common occurrence in post-medieval Cambridge!

We’ll keep you updated on new discoveries each week, so make sure to check back as we #DigDeeper

Sources:

2016. Barnack Limestone. Museum of Fine Arts. Boston. http://cameo.mfa.org/wiki/Barnack_limestone

Who lived in Medieval Cambridge?

The first look at a new PCA excavation in Cambridge

Central Cambridge has been a site of human occupation for centuries, if not longer, with evidence of people living in Cambridge from the Palaeolithic through to the modern day.

Pre-Construct Archaeology is beginning excavations in Cambridge, at the former West’s Garage on Newmarket Road, to continue filling in the blanks of our past.

We will be excavating near to Barnwell Priory, which was founded in AD 1092 by Picot, High Sheriff of Cambridgeshire, and originally based in a church dedicated to St Giles located near Castle Hill.  It moved to Chesterton in AD 1112 and remained in use as a monastery until 1538, when it was destroyed during the Dissolution of the monasteries.  Surviving structural remains can be seen at a few locations near the site, including the Cellarer’s Chequer and the Church of St Andrew the Less.

During the trial trench evaluation, we found fantastic evidence of medieval occupation on the site including multiple wells, formed from clunch and brick.  Clunch is a type of hard chalk that was quarried locally and used as a building material in this part of Cambridgeshire in medieval times; very successful as interior building decoration, but not the greatest for outdoor building! Clunch tends to weather quickly, not standing up to the elements very well. One of the wells contained 19th-century pottery and roof slate/tiles within it, demonstrating the continued use of this area of Cambridge for housing throughout the centuries.

Further updates on the excavations will be posted over the coming weeks, so keep checking to see what other amazing finds we unearth as PCA continues to #DigDeeper.