For me the main text starts a screen and half in. I think you need a lede above the contents explaining in 3 or 4 lines what this page is about, and you probably want that to end by prompting an action like "read on to find out more " or "if you'd like to help please see ABC section below"
It takes a lot of reading to find out that this is a project mostly focussed in Devon, and you never mention that the relevant Devon is in England.
It's just text. Are there images you could use to break it up? A nice Conybeare memorial perhaps? A word cloud of the variants? A map of the main locations mentioned? A distribution map of the surname?
The help needed is focussed on a list of individuals, but are there other requests you could make? Do you need help with certain record types, or someone who can visit a specific record office?
