Well done! This name is quite easy to guess. The Old English word for 'wheat' - hwǣte - looks a little bit strange to us today, but it sounds quite similar to our modern word. You have probably already guessed that Wheathill means exactly what it seems to be - 'wheat hill'!
Some things to think about:
Thinking about this name, what sort of occupation do you think the people that lived in Wheathill had? Why were they growing wheat? What can you make from wheat?