Its churchyard is currently contained in that of St John the Baptist's Church, Bathwick.
It featured a dominant Early English tower, a nave and chancel and large nearly triangular buttresses.
With William Pulteney's purchase of the Manor of Bathwick estate in 1727, the Pulteneys wished to relieve themselves of the small ruin on their estate, but waited until they had developed the property.
The designer of that church, John Pinch the Elder, was shortly employed by the Pulteney family to demolish the medieval Mary's, then called Bathwick Old Church, which he carried out in January 1818.
[1] Many of the stones, as well as the altar, pulpit and roof timbers, were recycled to construct St Mary the Virgin Parish Church's new mortuary chapel, which was also designed by Pinch the Elder.