To fill in a few gaps:

Ancestry index [with my additions/corrections]
1851 census
Name: Jacob Lewin
Age: 1
Estimated Birth Year: abt 1850
Where born: Douglas, Isle of Man, Isle of Man
Relation: Son
Father's Name: Charles Lewin
Mother's Name: Isabella Lewin
Gender: Male
Civil Parish or Township: Braddan
County/Island: Isle of Man
Household schedule number: 65
Braddan, Ballaview:
Household Members: Name Age
Charles Lewin 46 Farm Laborer b.German
Isabella Lewin wife 43 b.Braddan [CAINE]
Robert Lewin son 12 b.Braddan
Eleanora Lewin daur 10 b.Braddan
Charles Lewin son 7 b.Braddan
John Lewin son 5 b.Braddan
Isabella Lewin daur 3 b.Braddan
Jacob Lewin son 1 b.Douglas
Catharine Clucas niece 6 b.Marown
Jane Moore niece 4

1861 census:
Household schedule number: 62
Marown, Corvelley? Cottage:
Household Members: Name Age
Charles Lewin 53 Agri Lab b.German
Isabella Lewin wife 60 b.Braddan
Jacob Lewin son 12 b.Braddan
John Maddrell grandson 8 b.Braddan

Sue