OK, I have now read the posts (well most of them) and have access to my research (I was on a 5.57am train from Crewe to Edinburgh when I started my last post.
Fanny Irons b. bef Dec 1778 was the only surviving daughter of John Irons (Tea Dealer) and Anne Lowery, who lived in Chatham, Kent. John purchased Mackland Farm, Rainham/Upchurch, Kent, from a Government Pension Board and left it to Fanny when he died in Nov 1808.
Fanny married Richard Tanner, in St. Bride, Fleet on 16 Jun 1809 and they had a child, Fanny Tanner between 1811 and 1813. Fanny Tanner married John Clayton.
When Richard died. Fanny married secondly, Richard Burgess (snr.) and they had 4 children,
Ann Mary Burgess (b. abt Jul 1814) m. Anthony Aransola
Richard Burgess (b. 4 Dec 1815) m. Letitia/Lydia Barrett
John Burgess (b. 18 Oct 1818) unmarried (as far as I can tell)
George Mackland Burgess (b. 15 Apr 1822) m. Ann Poynton
All of this ties in with the 1841 Census where Richard, Letitia, John and George are all living together in Bethnal Green.
There are some problems, with Fanny Irons, dying in 1841/2, but not appearing on the 1841 Census, and there not being a death record, for Richard Burgess (snr.), but basically this fits.