Glen â€” Your either / or doesn't cover all possibilities, so your question is difficult to answer.
What happened, according to Baker & Crowe (sourcing from Baker's earlier PYREX â€” 60 Years of Design
) and Thompson was:-
- 1870 â€” James Angus died, so their Trimdon Street factory became Henry Greener, The Wear Flint Glass Works.
- 1873 â€” Factory relocated to a larger site at Millfield.
- 1882 â€” Greener died, and the company came close to bankruptcy.
- 1885 â€” James Augustus Jobling, principal creditor, took over.
- c. 1885 â€” name change to Greener & Co., The Wear Flint Glass Works.
- 1921 â€” name change to James A. Jobling & Co. Ltd., The Wear Flint Glass Works.
- c. 1928 â€” name change to James A. Jobling & Co. Ltd., Wear Glass Works.
Note that Greener & Co. probably acquired limited liability status before 1921.
Anyway, Glen, once the factory had set up at Millfield in 1873, it was one continuous operation until the recent closure â€” the 1921 and 1928 name changes were purely cosmetic.
Does that help?