Just to add, it would be great if you can add information with sources. I notice that there are very few sources for any of this family. You sent me off on a fascinating history trail (my son lives in Abingdon and I love to find out about places I know)
So for future reference . I found this article from the local council
http://www.abingdon.gov.uk/history/people/braunche-family
Also with detailed references Peter Walne Branch of Abingdon: A Revision The Virginia Magazine of History and Biography Vol. 67, No. 1 (Jan., 1959), pp. 82-10 http://www.jstor.org/stable/4246512 (can read without payment if registered)