Hi griz,
that was easier said than done.

If I have the correct John M Frankish in 1891, born Sheffield, I think this is him - so not William's brother
1861 Census Ardwick Lancashire
125 Tipping St
John Frankish, head, 42, Iron Agent & Traveller, St Margaret York
Elizth, wife, 42, Hull
Ann Elizth, dau, 19, Hull
John, son, 17, App Civil Engineer, Sheffield
Charles, son, 14, Scholar, Sheffield
Kate, dau, 10, Scholar, Sheffield
Betsy, dau, 6, Sheffield
Harry, son, 4, Sheffield
William, son, 1, Sheffield
Albert, son, 4 months, Ardwick Lancs
RG9/2868
Folio: 29
Page: 4
Regards
Darcy