Hi Jan,
Problem with my lot, they seem to travel all round Bucks stopping for a generation or so in each town. They are hard to link up. In my case, Richard is already married, he seems to have stopped by Winslow to work and have his children, thus getting the name 'Richard of Winslow,' but there is no record of him in the Winslow registers before the christenings. Then of course, he moves on with his son Rev Richard Purchas, and ends up in North Marston in the mid 1700s.
If your friend comes across a Richard getting married to a Ruth? then I would love to know.
As bertie says, they are out there somewhere.