Hello Dallas;
I looked in the NSDAR Patriot Index and did not find Jacob Matthews (with spouse Johnson) listed and Joseph Matthews. It doesnt mean that he didnt fight or participate, it just means that no one has joined under his name to NSDAR using his lineage.
They have might have not fighted but provided public service and there are books out that do list men and women who provided public service to the war effort. One book is called Virginia Publick Claims.
Hope this helps and if we can help you again, please feel free to contact us.
Warmly,
Sara
DAR Volunteer Information Specialist
This is a free look-up service provided by DAR volunteers at the DAR message board.