Please would listers in the Chesterfield area brave the woodlice and spiders to take a look at the odd housebricks in their back yards, most people have one or two under flowerpots and suchlike. I am seeking a brick marked OXLEY or GRASSMOOR, or something like that. These would have been made by Charles Oxley at his brickworks in Grassmoor in the 1860s-70s. Thanks, Peter.