Wombourne's tomb-face mystery

This grotesque carving is on the tower of Wombourne's St Benedict Biscop Church and overlooks the main part of the graveyard.
It’s odd to see a carving in the centre of the wall; and not attached either to a water-pipe or a decorative part of the structure.

The other odd thing about it is that it might – or might not - be connected to the grandest tomb in the graveyard.
The family tomb to the Allens (see below) includes, as you can see, this inscription-tribute to Daphne Allen:  'Look Up And See Her Face'.
However… there is nothing on the top of the tomb, and apart from the trees, you see nothing except the sky by looking up … unless you look round at the tower.  Where the only face is that of the grotesque.
The two can’t be connected, can they?  I can’t find out anything more…