Thanks RuthieB, yes I think the Empire does still exist, sadly no longer a theatre, however, I have received today from a relative researching the same family, copy of part of an old map of Middlesbrough, showing the Oxford Music Hall in Lower Feversham Street - literally next door to our ancestors. New one on me, never knew there was a music hall in Old Middlesbrough.
Thanks for the tip, I'll try the archive for programmes.
Regards
Ceeoh