Ollie, I found the information on the Fourth Huguenot ship on the Huguenot website:
The Huguenots on the Mattaponi River Passengers on the fourth ship settled on the Mattaponi River. Here is an excerpt from an article by Cameron Allen taken from Genealogical Research by the American Society of Genealogists (1971, 2 volumes).
"The Mattapony group settled in what was then King William County, perhaps attracted by the fact that a Huguenot clergyman, James Boisseau had settled there a decade or so earlier. Later the Mattapony area was cut off as Caroline County. Here we know that another Huguenot clergyman, the Rev. Francis Fontaine, served in St. Margaret's parish, Caroline County,1721-1722. Unfortunately the county records of both King William and Caroline (save the Order Books of the latter) have been destroyed, as have the Church of England Parish Records. Among the Huguenots resident in this settlement were the families of Seay, Peay, Derieux, Desmaizeau, Dismukes (originally DesMeaux, it is said), Jeter, Mallin, LaFoe, Chenault, DeJarnette, Micou, Flippo, Duval, Vigon, Micalle Debusie, and DeShazo (DeChazeau). The Mattapony settlement seems never to have been as strong as Manakintown, and there was some tendency to gravitate from the first to the latter....Contact between the two must certainly have been maintained for decades. Families from both participated and were closely associated in the development of Amelia County." (II, 283)