Two John Monk baptisms on family search Chelsea & St Marylebone but none Spitalfields.
1841 Crown Court in Quaker Street, Christchurch, Whitechapel, Middlesex
1851 Pools Place, Quaker Street, Christchurch, Whitechapel, Middlesex
All born Spitalfields, except Elizabeth Shoreditch
John   Monks   Head   43   1808   Silk Weaver
Elizabeth   Monks   Wife   42   1809   Silk Weaveress
Ann   Monks   Daughter   13   1838   Servant
Sarah   Monks   Daughter   12   1839   -
John   Monks   Son   10   1841   -
William   Monks   Son   9   1842   -
Thomas   Monks   Son   6   1845   -
Mary   Monks   Daughter   4   1847   -
Henry   Monks   Son   0   1851   -
I cannot find any of them after 1851?
Sorry I cannot help.
Colin