St Oswald's Priory is a ruined church north of the cathedral in Gloucester.
The Saxon church contained the relics of St Oswald and became famous for its wealth and miracles.
The first church on this site was founded in about 900 AD by Aethelflaed, daughter of King Alfred the Great. She and her husband Aethelred ruled the Kingdom of Mercia at a time when its eastern territory was occupied by Viking armies.
The church stood just outside the Roman walls, which Aethelflaed re-fortified, and was named the New Minster. In 909, she and her brother Edward (king of Wessex) led a campaign into Danish-occupied Lincolnshire and brought back important relics: the bones of St Oswald of Northumbria. These were placed in a crypt at the east end of the church.
Both Aethelflaed and her husband Aethelred were buried in the church near the holy relics. For the next century, the New Minster of St Oswald was famous for its great wealth and miracles worked by its resident saint. It was nicknamed "the Golden Minster."
In 1152, St Oswald's became an Augustinian Priory. In about 1250, a cloister and guest houses were built and the church was extended to the west.
St Oswald's Priory was dissolved in 1537 and its guest houses became a private house. But the north aisle was converted into a little church by blocking up the arches, and was used for worship for another century.
In 1656, this was pulled down, leaving only the wall that survives today.
The cache is also close to one of Gloucester's Heritage Pubs - one of the oldest, and purported to contain timbers from Drake's ship the Golden Hind.
My grandfather-in-law was landlord of the establishment in question for a while in the very early part of the 20th century. It was not a happy tenure and within a few years he returned to his job as a cabinet maker!