two directory entries that could fit :
Pettigrew & Oulton 1843
Thomas Cooper, 40 Mary street , engraver & cooper plate printer
the street listing in this directory show the address is shared with a
Mr. Roger Cooper (no trade or occupation included)
Thom's 1848
Thomas Cooper, 59 Grafton St - engraver & lithogr.
listed in the trades index as 'engraver, stationer, and fancy wafer maker'
no sign of him operating a business at either address in either 1834 or 1850
Shane