Is this the family in 1891, do you think? As Step 1 you need Clara's official birth cert from the GRO to be certain you have the right person, because there were several Clara Radcliffes around the same age in this census, including one with a sister Elizabeth (Cissie?), and others in Lancs. Do you think her parents came from the Isle of Man? If you don't have her birth cert you need to get her marriage cert first which will give her father's name and occupation. No point guessing and possibly going off in the wrong direction.

Household transcript from Findmypast:
Name Relation Condition Se x Age BirthYear Occupation Where Born
RADCLIFFE, John Tho Head Married M 46 1845 Police Constable Ramsey Isle of Man
RADCLIFFE, Mary J Wife Married F 44 1847 Castletown Isle of Man
RADCLIFFE, Eleanor Daughter F 12 1879 Liverpool Lancashire Toxteth Park
RADCLIFFE, Ann Daughter F 9 1882 Liverpool Lancashire Toxteth Park
RADCLIFFE, John Q Son M 7 1884 Liverpool Lancashire Toxteth Park
RADCLIFFE, Clara Daughter F 5 1886 Liverpool Lancashire Toxteth Park
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Piece:2927 Folio:85 Page:5
Registration District:Toxteth Park
Civil Parish:Toxteth Park Municipal Borough:Liverpool
Address:
29, Gwendoline Street, Toxteth Park, Liverpool County:Lancashire

Sue