There are 3 Della Rocca families listed on the 1881 Census CD's in Lambeth, London (Greater London West Disk 3 )... does anyone know anything about them or have links to these families?

Dwelling: 123 Lambeth Wk
Census Place: Lambeth, Surrey, England
Source: FHL Film 1341136 PRO Ref RG11 Piece 0595 Folio 89 Page 42
Marr Age Sex Birthplace
Stephen DELLA ROCCA M 51 M Lambeth, Surrey, England
Rel: Head
Occ: Plumber
Francis C. DELLA ROCCA M 55 F Lambeth, Surrey, England
Rel: Wife
Ernest H. DELLA ROCCA U 23 M Lambeth, Surrey, England
Rel: Son
Occ: House Painter
Kate E. DELLA ROCCA U 21 F Lambeth, Surrey, England
Rel: Daur
Occ: Pianofort Teacher
Loweza DELLA ROCCA U 19 F Lambeth, Surrey, England
Rel: Daur
Occ: Dressmaker
Elizth. A. DELLA ROCCA U 18 F Lambeth, Surrey, England
Rel: Daur
Occ: Pupil Teacher
Clara DELLA ROCCA U 15 F Lambeth, Surrey, England
Rel: Daur
Occ: Scholar
Fredrick DELLA ROCCA U 13 M Lambeth, Surrey, England
Rel: Son
Occ: Scholar

Dwelling: 157 & 156 Princes Rd
Census Place: Lambeth, Surrey, England
Source: FHL Film 1341136 PRO Ref RG11 Piece 0596 Folio 100 Page 10
Marr Age Sex Birthplace
William J. DELLA ROCCA M 41 M Lambeth, Surrey, England
Rel: Head
Occ: House Painter
Charlotte DELLA ROCCA M 40 F Lambeth, Surrey, England
Rel: Wife
Occ: Wife Of Above Keeps A Stewed Eel Shop
Catherine DELLA ROCCA U 16 F Clapham, Surrey, England
Rel: 2nd Cousin
Occ: Assistant In Stewed Eel Shop (Eating Ho)

Dwelling: 56 Railton Road
Census Place: Lambeth, Surrey, England
Source: FHL Film 1341144 PRO Ref RG11 Piece 0623 Folio 12 Page 18
Marr Age Sex Birthplace
Stephen C. DELLA ROCCA M 26 M Lambeth, Surrey, England
Rel: Head
Occ: Plumber Decorator
Caroline DELLA ROCCA M 23 F Kingsland, Middlesex, England
Rel: Wife
Charles DELLA ROCCA U 11 M Lambeth, Surrey, England
Rel: Son
Occ: Scholar
Frederick DELLA ROCCA U 20 m M Lambeth, Surrey, England
Rel: Son