Hi (again) Linda Simonetta
I have had another bash at identifying the correct Thomas Richardson
I went through all the Census records I have on my Ancestry and note that on two of them he is staying at Smedley's Hydro at the time of the census - the 1891 census alone (as a traveller in his Fine Art business) and secondly in 1901 with his wife and two of his daughters.
Interestingly in the 1891 census, he puts his middle name as Everett.... now having a middle name unusual as this I would have thought might help but this does not come up again anywhere that I can find - having re-searched the birth records - annoying that his Father was also Thomas and there are 4 Thomas' having sons called Thomas in the Doncaster district in 1842
However, that on his Marriage to Mary, he does say that his Father was a Farmer - which might indicate that Wroot is more likely. But also makes me wonder how a Farmers son becomes a wealthy Photographic Wholesaler then Art Dealer in London.