In the 1841 census Meetinghouse Lane, Brighton, civil parish Brighthelmstone, Sussex.
Benjamin Jonas, age 35, General Dealer, not born in county.
Benjamin Jonas, age 12, born in county. Isaac Jonas, age 10 born in county.
Clara Jonas, age 7, born in county.
Phoeba [as spelled] Jonas, age 5 born in county.
Moses Jonas, age 2, born in county.
Isabella Dunn, age 15 Female Servant, born in county.

In the 1851 census No. 17 Bell Lane, Christchurch Spitalfields, Middlesex, Whitechapel district, Artillery sub-district.
Head Benjamin Jonas, married, age 46, General Dealer, born Middlesex.
Wife Jane Jonas, age 48, born Middlesex.
Daughter Clara Jonas, single, age 17, born Sussex.
Daughter Phoebe Jonas, age 15, born Sussex.
Son Moses Jonas, age 12, General Dealer, born Sussex.
Son Rubin Jonas, age 9, born Sussex.
Daughter Ester Jonas, age 4, born Middlesex.