I'm not from Aethelmarc, but I have some suggestions.
First of all, if you sent an e-mail shortly before Pennsic your response might be delayed by the fact that the month or so before War is always crazy for those of us who are going. So now that War is over you might get an e-mail back.
Here are some other suggestions:
There is a phone number for the contact person for Port Oasis at
http://www.portoasis.org/ in the "contact us" section. Have you tried calling them? There is also a link there for the Yahoo Group for Port Oasis. Or you can go directly to the site at
http://groups.yahoo.com/group/PortOasis/?yguid=2298415 I followed the link and the group seems to be very active. You might want to join the Yahoo group and start meeting the folks from your Shire.
By the way, one of the messages there stated: "Now that we're back from the Wars, let's do start fencing again! We'll begin at Ritter Park this Monday, August 28th at 6:45-7:00 p.m." So that would be a good starting point of a place to show up and start meeting folks. Don't worry if you don't fence, just go an introduce yourself.
Barony of Blackstone Mountain has an on-line message board at
http://groups.yahoo.com/group/baronyofblackstonemountain/ You may be able to contact others from your area through the message board who can help you out.
If you can't make contact with your local Shire, try contacting the Seneschal for the Barony to see if they can help. You can find listings of the Barony officers at
http://www.blackstonemountain.net/index.aspGood luck to you!