You are right to go back to basics, as it were.
Your Henry Ridler said to have been born ca.1831 Whitechapel (in 1851), Bethnal Green (in 1861) and later census has St. Johns Wood!!
When he marries he lists his father as plain George.
In 1841 the family living in Marylebone and Henry listed as Harry - parents George Ridler 45 not born in London/Middlesex, Sarah Ridler 35, not born London/Middlesex plus Jane bc.1824, George bc.1826, Harry bc.1831, Martha bc.1835, William bc.1838 and Susan bc.1839 - all children born in county.
In 1851 George is a widower and shows he was born circa 1794 Stroudwater, Gloucestershire.
Youngest dau. Susan's birth entry on GRO website shows her mothers maiden name was Smith.
So, George Ridler was married to a Sarah Smith presumably ca.1823 although I cannot find it online anywhere. Nor can I find baptisms for their children.
Since George states he was born in Stroudwater, Gloucestershire how can he be the George Samuel bp.1793 in Shoreditch, London, son of a Samuel???
Annette
I cannot find an obvious baptism for a George Ridler ca.1795 Stroudwater, Gloucestershire.