From FreeBMD
Marriage Sept 1886
Henry Gower W Derby 8b 503
Annie Humphries W Derby 8b 503
I can't find the family under any combination of Gower or Humphries (various spellings of the surname for Annie's children by her first marriage) on the 1891 census.
This might be Annie on the 1881 census with her first husband, but then she would be slightly older than her second husband something she might have wished to play down when marrying him.
RG10 3636 folio 76
Ann Humphries abt 1856 Liverpool, Lancashire Wife 2 Upper Harrington St, Toxteth Park, Lancashire
Elizabeth Humphries abt 1880 Liverpool, Lancashire Daughter 2 Upper Harrington St, Toxteth Park, Lancashire
George Humphries abt 1853 Liverpool, Lancashire Head 2 Upper Harrington St, Toxteth Park, Lancashire
Margaret Humphries abt 1876 Liverpool, Lancashire Daughter 2 Upper Harrington St, Toxteth Park, Lancashire
The 1886 marriage will at least give you further details about Henry Gower's father.
Regards
Valda