I think its one and the same person Rowan, but I guess you have to prove it to make sure you dont make a major cock up with your tree.
The two differing address may well indicate an expansion in business, there might well be more, I had not delved any deeper, although I did go fairly forward to I think 1915 and the business is still going, although its now a limited company. It would be brilliant if you could keep us informed of any progress you make.