Joe, I'm assuming that when you refer to family F you mean Group F of the Marshall Surname Project at Family Tree DNA.If so then I am also a member.A cousin of mine put together a lot of information on our branch before he died and his daughter has put it on the internet.It can be found at http://worldconnect.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=GET&db=:3328196&id=I00058 There's also an interesting web site at http://www.marshallgenealogy.org/ on what I believe is the Group F Marshall family.Chris Marshall