Hi Polly
Thanks for the compliments on the site - quite chuffed with it myself as well.
You did not give any dates for your Thonas Chestle's settlement, but as the records go from 1674 up to 1822 - checked between those dates.
Unfortunately there is no one of that name listed - the nearest being Nicholas Chettle & Family in 1703 and again in 1708.
Sorry to have to give you a negative answer
Chris in 1066 Land