The Findmypast Household transcription for 1891 shows Joseph aged 5 b.Douglas, and both parents b.Ireland.

Name Relation Condition Se x Age BirthYear Occupation/Disability Where Born
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WHITE, William Head Married M 34 1857 Cabinet Maker Ireland
WHITE, Bridget Wife Married F 29 1862 Ireland
WHITE, Mary F Daughter F 11 1880 Scholar Douglas Isle of Man
WHITE, Patrick Son M 10 1881 Scholar Douglas Isle of Man
WHITE, William Son M 7 1884 Scholar Douglas Isle of Man
WHITE, Jos L Son M 5 1886 Scholar Douglas Isle of Man
WHITE, Thomas J Son M 2 1889 Douglas Isle of Man
WHITE, ? L M Daughter F 0 (10M) 1891 Douglas Isle of Man

RG number:RG12 Piece:4688 Folio:31 Page:22
Registration District:Isle of Man Sub District:G Enumeration District:10 Ecclesiastical Parish:St Georges Civil Parish:Conchan Municipal Borough:
Address:36, Hope Street, Conchan, Douglas County:Isle of Man

I had a look at the scan because of where they put "?", and it has strange spelling for BL's index entry: WHITE, Beatrice Lizzie, 10 May 1890, Douglas, 841, WHITE, William, MURPHEY, Bridget, [as "Bitris L.M." aged 10 months].

Their marriage: WHITE, William, 27 Jul 1878, D, A2, 76, MURPHEY, Bridget.

Sue