I can't believe there are no follow-ups to your message since you so kindly offered to do some searching in the obits and death records in the Mount Vernon area. This offer was made a year ago, are you still willing to help?
I have a whole branch of family that migrated to the area in 1826 from Maryland and remained there at least until the 1890's.
The obits really intrigue me for they can tell so much including more personal stuff like hobbies, type of personality...
I won't throw a bunch of names at you until I hear that you're still willing to do this. I'll understand if you've changed you mind. :)