I first became interested in these unique memorials when I found the indent of one in a ledgerstone at Oulton. An indent is where the brass has gone but the shape remains. I have now recorded over 20 of these memorials in Norfolk, and realise they cover just a 30 year period.  The image above is of one in St Giles Church, Norwich which is the oldest I`ve yet discovered, 1499.

Each one is to a priest, and usually their names are quite readable. Even when the brass has disappeared the shape gives it away. They must have been made by one workshop - presumably in Norwich - and they are distributed across the eastern half of the county. They are all very similar, with minor variations of the style of chalice.