I feel silly, I typed up a whole story and had posted it but was stopped due to Rosie99 replying, so I read her information thereby losing my reply to you all. Can someone help find it? If not I will have to type it all again.
Going on what Rosie has added
The Thomas and Elizabeth who had Thomas 1814, also had Elizabeth Ann 1814 and John 1817 Wilks Street, so it would appear that this Elizabeth Ann is the one who married Thomas Simpson. Correct me if I am wrong. This would make Thomas, George, Elizabeth Ann and John not related to the Bethnal Green READS' or did they live in Wilks Street before going to Bethnal Green.
Sorry I don't know England at all so where is Wilks Street, anywhere near Bethnal Green?
Lesley