Found a Lucy May with her grandparents in 1891 - if that's any help?
Reference RG12, Piece 895, Folio 42, Page 22
7 South Street, Ventnor, Isle of Wight
Russell, George Henry Head 50 Cab Proprietor b ST Lawrence, IOW
Russell, Elizabeth Wife F 48 b Withington, Herefordshire
Russell, Charles William Son M 16 Driver b Ventnor
Russell, Edwin Arthur Son M 11 b Ventnor
Russell, Lucy May Granddaughter F 4 b Ventnor