He drew many detailed sketches of buildings, grave slabs and other archaeological remains throughout Ireland.
Even grave slabs from the Greyfriars cemetery were used.
There are several Medieval grave slabs built into the wall, the oldest of these dates from the 13th century.
On the floor are grave slabs relating to the Turner family who were later residents of the hall.
In the south aisle is a grave slab from about 1100 carved with a cross and interlacing.
"Something cut into the actual grave slab set over his bones."
Some grave slabs and carved stone are preserved in Bardney parish church.
Two centrally placed grave slabs are visible below the east window.
A number of stone artefacts and partial grave slabs have been discovered over the years around the chapel, where they can be seen today.
There are five more grave slabs leaning against the wall of the north transept.