Katharine. Wow. 

I've been using various sources [census, family histories, etc], but never
thought to look into Westmoreland or Lancaster County.
And I didn't think LENHAM was the same as LYNHAM or LYNEM or LYNAM or
LYNUM/LINNUM, etc.

The only info I had was that John and Jane Lynham sold and purchased property
with Major John Muttron Jr. 
and Paul Littlefield. That's it.

But now that I think of it... LYN and LEN have the same pronuciation.  Mmmm.

If you have anything else [AND OF COURSE THE TIME. LOL] shoot it my way.

Thank you so so much. 

However, I am curious about John being described as "impotent"... did this
mean without heirs? Mmm...