Conspicuous in the museum are a number of graves at floor level. At the south-west there is a large double slab covering a married couple; this dates from the 13th or 14th century and its incised lines were originally red. Each half of the slab has a cross, while one half has a pair of shears, and the other a sword and shield and horseshoe. Bones of a skeleton were found under the dexter half only. The slab was not moved – a hole was dug underneath. In the summer of 2013 a visitor said the symbolism on the slab had connections with the Knights Templar.

Next to this double slab lies a slab with a shield and triangle: it is not known what the triangle represents, but a stirrup-iron has been suggested.

In the middle of the room is a double coped tomb of Purbeck marble, each half of which was charged with a cross fleury (no longer visible). When this was excavated there was found on the south side a decayed wooden coffin and decayed skeleton of unascertainable gender, and on the north side a lidless stone coffin with a skeleton. The stone one was two inches thick, and internally six foot one and a half inches long, ten and a half inches deep, and 20 and a half inches wide at the head, ten and a half at the foot.. The occupants were identified as Abbots William de Horsley, who died in 1353 and Roger de Kirketon, who died in 1356. It was replaced carefully.

Alongside the effigy is an incised slab: the tomb of a knight, it has a skeleton without a coffin.

North of the double abbots' slab was another interment in a sound oak coffin. In the wet summer of 2010, marks of this were seen: the shape of a coffin in damper gravel than that surrounding it.

On the north side of the room, built into the stone platform, was part of a very fine incised cross-slab.

In a prominent position near the doorway lies an effigy, familiarly known to the owners as Fred. He lies on a squared stone bed. It is on record that St John Hope dug down about three feet, removed several large rough slabs, and found a bed of clay covering a wooden coffin, made of oak, sound and perfect except where the lid had given in along the centre groove due to the weight. It contained the skull and larger bones of a small man, buried without relics but with leaves, much like the common privet, green and pliant although buried over 500 years before. They were mixed with mud and clay. The coffin was five feet nine inches long, one foot eight inches wide at the head, one foot two inches at the foot and 11 and a half inches deep. It was made of one inch thick boards, the bottom and the lid