Question: What was the nationality of the man for whom the county where Quercus oglethorpensis was first discovered is named?

Context articles: Donnayite-(Y)
The Big Tree, Rockport
James Oglethorpe
Articerodes thailandicus
Quercus cornelius-mulleri
Quercus oglethorpensis
List of Halley-type comets
Phytophthora kernoviae
Redheadia
Vancleavea

Donnayite-(Y) is a rare-earth carbonate mineral containing the rare-earth metal yttrium.
 It was first discovered in 1978 at Mont St-Hilaire, Quebec.
 Donnayite was subsequently identified and named after Joseph D. H. Donnay and his wife, Gabrielle Donnay.
 Both were prominent mineralogists and crystallographers, and J. D. H. Donnay was awarded the Roebling Award by the Mineralogical Society of America in 1971 for his emphasis on the importance of optical mineralogy and crystal morphology.
 Donnayite tends to occur in small quantities in the pegmatite dykes and miarolitic cavities of mountainous regions.
 It crystallizes in this environment with increasing alkalinity values until the alkalinity suddenly drops during the last stage of crystallization.
 This results in increasing amounts of Na carbonates and REE minerals.
 First discovered at Mont St-Hilaire, donnayite has since been found in the Southern Ural Mountains of Russia and the Narssarssuk pegmatite of South Greenland.
 Donnayite crystals tend to be small and the color is commonly pale yellow to yellow with a white streak and a vitreous luster.
 Donnayite crystals usually display trigonal or hexagonal symmetry and have a hardness of 3.
 Twinning is extremely common in this mineral.
 Minerals closely related to donnayite include synchysite, calcite, sphalerite, microcline, and analcime.
 Donnayite is isomorphous with weloganite and mckelveyite.
The "Big Tree", located near the town of Rockport, Texas, is one of the most famous live oaks in the world after being named "Texas State Champion Virginia Live Oak" ("Quercus virginiana") in 1969.
 The tree retained that title until 2003 when a larger oak was discovered in Brazoria County, Texas.
 The "Big Tree" is still thought to be one of the largest live oak specimens in the United States.
James Edward Oglethorpe (22 December 1696 – 30 June 1785) was a British soldier, Member of Parliament, and philanthropist, as well as the founder of the colony of Georgia.
 As a social reformer, he hoped to resettle Britain's worthy poor in the New World, initially focusing on those in debtors' prisons.
Articerodes thailandicus is a rove beetle discovered in Thailand in 2008.
 It was named for Thailand, where it was first discovered.
 It is closely related to "Articerodes jariyae" and "Articerodes ohmomoi", discovered during the same study.
Quercus cornelius-mulleri is a North American species of oak known by the common name Muller oak, or Muller's oak.
 It was described to science in 1981 when it was segregated from the "Quercus dumosa" complex and found to warrant species status of its own.
 It was named for the ecologist Cornelius Herman Muller.
 It is native to southern California and Baja California, where it grows in chaparral, oak woodlands, and other habitat in foothills and mountains.
 It can most easily be observed in Joshua Tree National Park and in the woodlands along the western margins of the Colorado Desert in San Diego County, California.
Quercus oglethorpensis (also called Oglethorpe oak) is a species of plant in the beech family.
 It is endemic to the United States.
 It is named for Oglethorpe County, Georgia, where it was first discovered.
 The county, in turn, is named for James Oglethorpe, founder of Georgia Colony in the 18th Century.
The following is a list of Halley-type comets (HTCs), which are periodic comet with an orbital period between 20 and 200 years, often appearing only once or twice within one's lifetime.
 The majority come from between the orbits of Saturn and Neptune; Due to the nature of their orbits, their orbits can be perturbed by the giant planets and sent into orbits too far from the Sun to outgas, and vice versa.
 Minor planets in comet-like orbits similar to HTCs that never come close enough to the Sun to outgas are called Centaurs.
 HTCs are named after the first discovered member, and the first discovered periodic comet, Halley's Comet, which orbits the Sun in about 75 years, and passing as far as the orbit of Neptune.
Phytophthora kernoviae is a plant pathogen that mainly infects European beech ("Fagus sylvatica") and "Rhododendron ponticum".
 It was first identified in 2003 in Cornwall, UK when scientists were surveying for the presence of "Phytophthora ramorum".
 This made it the third new "Phytophthora" species to be found in the UK in a decade.
 It was named "Phytophthora kernoviae", after the ancient name for Cornwall, Kernow.
 It causes large stem lesions on beech and necrosis of stems and leaves of "Rhododendron ponticum".
 It is self-fertile.
 It has also been isolated from "Quercus robur" and "Liriodendron tulipifera".
 The original paper describing the species, stated it can infect "Magnolia" and "Camellia" species, "Pieris formosa", "Gevuina avellana", "Michelia doltsopa" and "Quercus ilex".
 Since then many other plants have been identified as natural hosts of the pathogen.
 Molecular analysis has revealed that an infection on "Pinus radiata", recorded in New Zealand in 1950, was caused by "P. kernoviae".
Redheadia is a genus of fungi in the family Sclerotiniaceae.
 It is a monotypic genus, containing the single species Redheadia quercus, described in 2005 by Suto and Suyama.
 "R. quercus" is the teleomorph form of the fungus "Mycopappus quercus", which causes a plant disease called "frosty mildew" in the Sawtooth Oak ("Quercus acutissima").
 The genus is named after Canadian mycologist Scott A. Redhead who first described the anamorph genus "Mycopappus", while the specific epithet is named after the genus of the host plant.
Vancleavea is a genus of extinct, armoured, non-archosaurian archosauriform with relatively small limbs from the Late Triassic of western North America.
 The type and only species is "V. campi", named by Robert Long & Phillip A Murry, 1995.
 A nearly complete and articulated skeleton was discovered at the Coelophysis Quarry in north-central New Mexico (Ghost Ranch), USA, and was prepared at the Ruth Hall Museum of Paleontology in Abiquiú, New Mexico before being formally described in the "Zoological Journal of the Linnean Society" in 2009.
 "Vancleavea" was first discovered in 1962 from the Petrified Forest Member of the Petrified Forest National Park and initially described by Long and Murry in 1995.
 The genus is named after Phillip Van Cleave, who discovered the first known remains of the genus.
 "Vancleavea" is a fairly common occurrence in most levels of the Chinle Formation, however, due to the poorly preserved remains, it is difficult to compare specimens across stratigraphic levels.