I see from your message that you are interested in tracking all Orpwoods so perhaps you may be interested in 4 ancestors of mine from a part of Berkshire that is now in Oxon. They are :
Richard Orpwood who m. Martha Blake in 1690 at West Hanney - their son....
Richard Orpwood who m. an Elizabeth unknown - their son ....
Bernard Orpwood bap. 03/03/1717 at Ardington. Sarum Marriage Licence Bonds 18/06 1747 to marry
Ann Robinson at Ardington. Bondsman Richard Craggs, Mason of Oxford. Their daughter ....
Elizabeth Orpwood bap. 14/07/1754 at Ardington. m. James Farr on 16/10/1779 at West Hanney.
I'm afraid I dont have any more details of dates or places but I hope these are of interest to you and please ask if you want to see more of my tree.