Her baptism from FamilySearch:

Elizabeth Octavie Busfeild
England Births and Christenings
Name:               Elizabeth Octavie Busfeild
Gender:             Female
Christening Date:   07 Apr 1815
Christening Place:  BINGLEY,YORK,ENGLAND
Father's Name:      Currer Fothergill Busfeild
Mother's Name:      Sarah
Indexing Project (Batch) Number:  C00737-2 ,
System Origin:                    England-ODM ,
GS Film number:                   0919130, 0919131
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Her surname change must have been with her mother in 1837 as she got married with the Ferrand surname.  (Though in the index it is FERRANA.)
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In 1841 she and her husband were with an enormous household with her mother at St Ives, Bingley.
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In 1851 her family was:

First name(s) Last name Relationship Marital status  Gender  Age  Birth year  Occupation  Birth place

Thomas William   Rawson  Head      Married    Male    37  1814 Land Agent & C Employing One Man  Halifax, Yorkshire
Elizabeth O      Rawson  Wife      Married    Female  36  1815  -                  Bingley, Yorkshire
Thomas Preston   Rawson  Son       -          Male     9  1842  Scholar            Bradford, Yorkshire
Sarah F          Rawson  Daughter  -          Female   5  1846  -                  Halifax, Yorkshire
Elizabeth H      Rawson  Daughter  -          Female   7  1844  -                  Bradford, Yorkshire
Currer Benjamin  Rawson  Son       -          Male     1  1850  -                  Manningham, Yorkshire
Benjamin Currer  Rawson  Son       -          Male     1  1850  -                  Manningham, Yorkshire
Rebecca          Hardy   Servant   Unmarried  Female  37  1814  House Servant      Lancashire
Sarah            Taylor  Servant   Unmarried  Female  26  1825  House Servant      Bingley, Yorkshire
Emma             Shires  Servant   Unmarried  Female  16  1835  Nurse Maid         Poole, Yorkshire

Census details:
First name(s)          Elizabeth O
Last name              Rawson
Relationship           Wife
Marital status         Married
Gender                 Female
Age                    36
Birth year             1815
Occupation             -
Birth place            England
Birth town             Bingley
Birth county           Yorkshire
House name             Prospect House
City                   Bradford
County                 Yorkshire, Yorkshire (West Riding)
Parliamentary borough  Bradford
Municipal ward         Bradford
Registration district  Bradford
Archive reference      HO107
Piece number           2310
Folio                  280
Page                   6
Record set             1851 England, Wales & Scotland Census
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The births of Benjamin and Currer:

Surname First name(s) District Vol Page
Births Dec 1849   (>99%)
RAWSON Benjamin Currer Bradford Y 23 178
RAWSON Currer Benjamin Bradford Y 23 178
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These are probably her children but without the 1861 census, how can we tell?

Surname First name(s) District Vol Page
Births Sep 1851   (>99%)
Rawson Octavia Victoria Bradford 23 199

Surname First name(s) District Vol Page
Births Dec 1853   (>99%)
RAWSON William Busfield Bradford Y 9b 113
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Octavia died in 1865 but only her burial is to be found:

First name(s)   Octavia Victoria
Last name       Rawson
Gender          Female
Marital status  Single
Occupation      -
Event year      1865
Birth year      1852
Age at death    13y
Burial year     1865
Burial date     20 Apr 1865
Burial place    Halifax, York, England
Cemetery        Holy Trinity Church
Residence       Halifax, York, England
Place           Halifax
County          Yorkshire
Country         England
Record set      England Deaths & Burials 1538-1991
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William Busfeild was found on the 1871 census as a lodger in Bradford, aged 17 and an articled clerk.  But not on the 1861 or 1881 censuses.
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The death of Currer:

Surname First name(s) Age District Vol Page
Deaths Mar 1856   (>99%)
Rawson Currer Benjamin Halifax 9a 260
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The death of Benjamin C:

Surname First name(s) Age District Vol Page
Deaths Dec 1924   (>99%)
Rawson Benjamin C 75 Alton 2c 180
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Their marriage registration date:

Surname First name(s) District Vol Page
Marriages Mar 1840   (>99%)
FERRAMA Elizabeth Octavia Busfield Weymouth   8  191
FERRANA Elizabeth Octavia Busfield Weymouth   8  191
RAWSON Thomas William    Weymouth   8  191
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And FamilySearch has transcribed the same index.