This should give you a start:
1901 England Census
Name: William Steinhofil Age: 8
Estimated birth year: abt 1893 Relation: Son
Father's name: Charles Steinhofil Mother's name: Emily Steinhofil
Gender: Male
Where born: London; Limehouse, Middlesex, England
Civil Parish: Toxteth Park Ecclesiastical parish: St Thomas
County/Island: Lancashire Country: England
Street address: 51, Northumberland Street, Toxteth Park
Occupation: Machinist Woodwork (father)
Registration district: Toxteth Park Sub-registration district: Toxteth Park
ED, institution, or vessel: 14 Household schedule number: 28
Charles Steinhofil (Germany subject)
52 Emily Steinhofil 41
Louis Steinhofil 12 John Steinhofil 10 Bertha Steinhofil 9
William Steinhofil 8 (mother and Children all Limehouse
London Middlesex)
Maud Steinhofil 4 Emily Steinhofil 1 (Born Liverpool)
You will find Charles on the 1891 Census in Poplar - occ coffee house keeper