There where in VA is a two-fer: I grew up in Loudoun County (when it was still more horse country than suburb), but spent the last decade in Hampton Roads.
The where in MD is Baltimore County. Looks like I'm about an hour from you
I wasn't on DG, but I was a Cubiter. We've definitely crossed paths, but I don't recall if it was here or there.
A swap group sounds great! I traded seeds on Cubits, but I didn't know others gardeners near me in VA, so I never did any get-togethers.