Could this Jonathan and Elizabeth (bottom left) be the couple who married in 1815?
https://www.ancestry.co.uk/discovery...=successSource
They could be the parents of Henry who died and also of George who you didn't mention (born and died 1816/7). The father for those two is silkman whereas the father for Helen is ribbon manufacturer. I realise these occupations are interchangable, but just thought I'd note it.