The researcher at the National Archives found some partial information on the Rufus D Stephens War of 1812 horse claim.
Details are minimal, but the claim indicates he was living in Ontario County, New York, at the time of the claim. The name of the lawyer is also given.
Not a huge clue, but time may prove me wrong on just how helpful this might be.
One should never overlook any record--no matter how slight. This horse claim helps me tie a location to Rufus D. Stephens and in this time period that can sometimes be difficult to do.