I'm responding to the challenge re. number of children to Thomas and Susan via baptisms, births index on GRO, and census but I can only come up with 11 (lots of errors here re. surname, some mistranscription, some clerical errors I suspect, but the following is how it pans out:
1. Susan Elizabeth Buckley b.22/6/1851, bp.20/7/1851 Shoreditch (born 2 months before parents marriage, no birth entry under either surname)
2. James William Buckley b.8/5/1853, bp.15/6/1853 Bethnal Green
3. Thomas John Buckley b.15/5/1855, bp.10/6/1855 Bethnal Green
4. Mary Ann Levy Buckley (bp.as Butley, reg'd as Butler) b.28/8/1858, bp.19/9/1858 Bethnal Green
5. Anne Elizabeth Buckley bp.28/7/1860, bp.187/8/1860 Bethnal Green
6. Elizabeth Buckley b.23/9/1862, bp.16/11/1862 Bethnal Green (baptism as Betsy Elizabeth and surname as Butler)
7. Eliza Buckley b.7/3/1865, bp.26/3/1865 Bethnal Green with surname Lever!! Died 1866.
8. William John Levy Buckley b.31/10/1867, bp.24/11/1867 as William John with surname Levy!
9. Jane Eliza Buckley 1870 - can't find baptism at all but birth reg'd as Levy, Dec.1870, mmn Harvey
10. Clara Buckley b.26/6/1873, bp.13/7/1873 Bethnal Green as Lever, reg'd as Levy!
11. Eliza Buckley b.3/12/1876, bp.24/12/1876 Bethnal Green (can't find birth regn.)
So, johnhood, who is the 12th child please?
Annette