Not yet, I figured I would start here. Texags knows things. I think my nest step might be to look over his and his wife's genealogy if I can find it online. Maybe a few hints there before I go further.
I've also been trying to track down different portrait artists of the time and compare their work to this one.
It is highly doubtful but this does resemble other portraits by Sarah Miriam Peale
Again I know it's probably not her but the hands, eyes, and the red fabrics she used are similar.
Also I don't see signatures on most of her portraits, the signature and portrait information I have been able to find was usually on the paper backing which in this case is long gone.
EDIT
I love the hunt as well. It's amazing what you learn throughout the process. I have another portrait I picked up at a flea market that I gave up on a while back. I have it stored away and may try again. At least on that one I have names (though hard to read) on the painting. I need to dig out a few of my more interesting if not really valuable finds and post them here sometime.