Thanks, Mr. Marriot.Actually, I knew Preeson Snead's parentage when I wrote the post--Charles and Arabella (Bowdoin?) Snead had several children, including sons Robert, Preeson, and Bowdoin.
The name Preeson turns up as the first name of an uncle of mine--Preeson Brittingham, son of Nathanial and Susan Brittingham (they married ca. 1810; he died in the early 1860s; she died 1850-60).We don't know Susan's surname, but I have a theory that it was Snead, and that she may have been the daughter of either Preeson or Robert Snead (I can't find any other avenue for "Preeson" to have become a first name in the Brittingham family).However, I have found no proof of this theory--there is unfortunately no marriage record between a Nathaniel Brittingham and a Susan in Worcester or Somerset Counties in Maryland, or Accomack County in Virginia during the appropriate period, nor have I found any helpful land records.
We do know Robert (son of Charles and Arabella) had sons John C., George L., and Tully Snead, and I have been hoping that someone might have a family bible or something that would shed more light on this family.But all this seemed too much to put in one query, so I just asked about the family in general.(One note: it turns out that Bowdoin Snead was the father of a step-great-etc.-grandmother of mine in another branch of my family.)