John Jacobs 40 London, England Head Lambeth London
Rebecca Jacobs 37 London, England Wife Lambeth London
John Jacobs 19 (/17) Lambeth Son Lambeth London
Amelia Jacobs 15 Lambeth Daughter Lambeth London
Katherina E Jacobs 14 Lambeth Daughter Lambeth London
Edward Jacobs 10 Lambeth Son Lambeth London
Florence Jacobs 8 Lambeth Daughter Lambeth London
Rose L Jacobs 5 Lambeth Daughter Lambeth London
Adelaide M Jacobs 1 Lambeth Daughter Lambeth London
1891:
Jacobs, John 30 Bishopsgate , London Head Lambeth London
Jacobs, Rebecca 29 Bishopsgate, London Wife Lambeth London
Jacobs, Hymen 7 Lambeth, London Son Lambeth London
Jacobs, Amelia 6 Lambeth, London Daughter Lambeth London
Jacobs, Katherine 4 Lambeth, London Daughter Lambeth London
Jacobs, Edward 6w Lambeth, London Son Lambeth London
So it would seem that Rebecca also used the name Olivia, unless the husband gave the info and couldn't remember who he married.
Pauline