hello Heywood, and thank you for all your searching...
I have been unable to positively locate the siblings in 1891, but there are some possibles.
There is 1 John Barlow, a boarder and grocer in Ardwick, and I found an Edith Maud in Cheshire, living with 2 Misses Molyneaux, I think Edith was described as a niece but now I cannot find it again. You mentioned Cheshire, about Amy Lucy?
Thomas Leopold is unfindable, heaven knows where he was. He was born in Crumpsall Workhouse, 1886, and disappears again in the census until 1901, where it seems he was in the Tulketh Home for Working Catholic Boys.
I lost track also of the parents, Thomas Snr.and Alice, except in 1891 there was an Alice Barlow in 126 Charter St, St George. She was listed as a wife and a charwoman and the age is correct. Between gaol times, they spent some time in different workhouses. The name of Thomas Barlow comes up many times in later workhouse records, but it's such a common name, I cannot feel sure.
Thomas Barlow (the father) was the son of John Barlow, and perhaps used his name after the disgrace of the crimes. This makes sense to me. I noticed that both Edith and Thomas Jnr. denied him on their marriage certificates. He was in fact a bookbinder, not a bricklayer or a soldier. I have not been able to trace him beyond his last conviction.
I saw that note on Thomas Jnr.'s attestation, giving his sister's address - does that mean he was living at the same place? This makes me think the children must have had knowledge of each other, I had sort of imagined them scattered and homeless through their parents' troubles.
I think it must be my tree showing Thomas Leopold, but his father is listed as Thomas and his mother as Alice Shorrocks.
I have the later details of the children's marriages and family, but Amy Lucy is new.
All the best, Bea.