Start with what you do know and work backwards. Do you know Harry Adams's birth and death dates and place? If yes, great you can move back one generation. If no, what DO you know about him?
Then post again with the info you DO know and tell us exactly what you're looking for.
I started to research Knighton but then read your post again and it looks like you already have this info. If not, what are you looking for about one person? I'll be glad to help if you narrow your scope.