That looks to have done it.The Other two Elizabeth's were 1812 and 1813 so would be 35 or 36 years old.
At 33 Elizabeth fits spot on so I think we can confidently say that all three Yetton's and all three Ferdinando's married from the same families.They must have lived close or worked together.George was a Weaver, and I am sure Tony Yetton said that the Yetton's were Weavers too.
I know that in 1825 they lived in Bath Street and in 1827, Green Street.James was born in Twig Folly which is in Bethnal Green next to the Regent's Canal. In 1837 they lived in Pill Street and Elizabeth was born in Soker Street in 1815.So maybe they lived near to each other.I will have to get the maps out and have a look!
I have a copy of 1881 on CD ROM and thanks for the other information.I will have to see if we have this amongst the collected genealogists, if not I will have to get along to the LMA.