I suppose it is possible that William Simpson, the licensee, had managers in to run the pub. Or, did Elsie Marietta live with him without being married?
I will check again because even if she wasn't named as landlady, there should be some evidence of her being there. Not sure if it is possible to get hold of old electoral registers which would give names of the entire household.
Failing that, I need to start accosting the older members of the Wheatsheaf clientele to see what they know!
Jen