Hi
The 1891 UK census, Derbyshire, Church Gresley, Reg. Dist: Burton upon Trent,
RG12/2198, Folio 42, Page 31, ED 2
Living at 142 Wilmot Road
WILKINSON
John, 31, Milk Seller, b Leicester, Blackforby
Elizabeth, 30, wife, b Stafford, Burslem
Mary, 4, dau, b Derby, Ch Gresley
Ethel 2, dau, b Derby, Ch Gresley
Harrington John,son, 8 mos, b Derby Ch. Gresley
Ann, mother, 55, asst. milk seller, b Derby, Linton.
This narrows down their date a bit, and I hope the other information helps as well.
Regards,
Valerie