On the Virginia Wiki page there are several sources to find Virginia marriages. As of this date I have searched in all of the Virginia Digital Collections with no positive results. I am moving on to searching for other Elisha Cragun research. The link below takes you to the Wiki page for Virginia.
https://familysearch.org/learn/wiki/en/Virginia
All sources that I find I post on FamilySearch Family Tree which is now open to everyone and it's free.
Are you related to Patrick Cragun, the boy who left Ireland in the mid 1700's? The one who is said to have been a part of the Boston Tea Party? If so, this blog's for you. I am going to make it easy for us to work together on solving the many puzzles unknown about Patrick and his many descendants. In early August I will be posting a research plan which can guide us to be effective, even more effective together. I believe once I have that document posted you will see what I mean.