The marriage cert of Elizabeth Upton and John Blades may solve the problem (24 Carlton St is unoccupied in 1891)
Edit - I still wonder if Elizabeth Upton was the widow of this marriage I posted earlier - William Upton to Elisabeth Ann Peet June Qtr 1871 Radford 7b 313
In 1871 there is an Elizabeth Peet age 23 lace maker b Nottingham living as a lodger in Nottingham with a Mary Peet age 80 b Horncastle Lincs as Head RG10 Piece 3511 Folio 12 Page 18
and a possible Elizabeth Peat in 1861 living in Sneinton with parents John and Mary Peat and family
