Thank you for the update. I pulled a file off my lap top that probably came from the IGC indirectly. I had done some sort of search when I picked up my Moore and Harris.

Since Joseph Manton died in 1839 and Joseph Egg took over the business, the hiatus for William Parker Grey (to 1847) would have been mildly curious. Perhaps equally curious is the confidence with which W. Patrick Grey is asserted. The evidence may be overwhelming, but it is not presented here.