In my Washington County WillBook Index 1781-1900 there are 3 John's listed and one Mary.

will to be
found in Volume

WALLACE, John 2/page 172 probated 1808
WALLACE, John 9/page 708 probated 1872
WALLACE, John 10/page 460probated 1876
WALLACE, Mary 2/page 387 probated 1812

Hope this helps
Patty
hrfrosty@aol.com