On the 1861 census, Charles Hill's age is in the "female" column, and he is listed as a dressmaker - usually a woman's job at that time, surely? His birthplace is given as Switzerland. The only reasonably similar family I have found so far in 1851 is this one:
HO107/1471/321/586 Munder Rd, Fulham
William Hill, Head, 24, Coal Hewer, b Roscommon, Ireland
Charlotte Hill, Wife, 34, b
Switzerland B S
William Hill, Son, 3, b Lambeth
Louisa Hill, Dau, 3m, b Hammersmith
If it's the same family, I don't know where Rudolf (b c1848) has disappeared to. Still looking in 1871...

Rambler