Okay Ian
There are at least 4 graves in the Churchyard with the Inscriptions face down.

Edward Rand is the1st Child that I found being baptised at St Sepulchre (that would match the marriage date)
May 27th recd 3d
The next baptism is the one with a large black column where the childs name is and I think is Francis
(but don't quote me on that) being born May 6th baptd May 16th 1797
The next is a daughter same black column born April 23d baptd May 14th 1801
Yippee one I can read and it is another son
Charles born Septr 8 Baptized Octr 7 1803.
Sandy