See quotation 1811.
1709. The land of this Percoarson, or Valley, being extraordinary rich, and runs of water well stored with Fowl.J. Lawson, The History of Carolina, 26. (N.E.D.)
1760. Black mould taken out of the Pocoson on the creek side.Geo. Washington, Writings (1889), ii. 163. (N.E.D.)
1811. A considerable extent of that kind of flat, wet pine lands, which is known in North Carolina and some other places by the name of poccooson lands.Mass. Spy, Jan. 23.