Anonymous, you need to be a bit more specific about what you want to know and for best results provide at least the information that you have. You are otherwise in danger of being told things you already know or not told anything AND we are in danger of wasting our time trying to help you.
Please tell us more... For example, are you aware of any marriages and/or children ?
He appears to have been born in East London...?
Name: BARNETT, Solomon
Registration district: East London
Year of registration: 1845
Quarter of registration: Jul-Aug-Sep
Mother's maiden name: Not available before 1911 Q3
Volume no: II (2)
Page no: 204
He appears to be living with his mother and brother in 1861 in South London...?
BARNET, Elizabeth Head Married F 40 1821 Charwoman Surrey, Blackpoint Road
BARNET, Solomon Son M 11 1850 Scholar Brixton, Surrey
BARNET, Alexander Son M 9 1852 Scholar Brixton, Surrey