John Mercer
born 1676 Elizabeth, New Jersey
died 1747

father:
Moses Mercer, b. 1654

mother;

siblings:

spouse (1st):
Elizabeth Bentley,
married 1708 Elizabethtown, New Jersey

children:
Gideon Mercer, b. 1709, d.

spouse (2nd):
Sarah Ann Moore
married 1713

children:
Edward Mercer
William Mercer
Jonathon Mercer
Robert Mercer
David Mercer
Job Mercer
Blanch Mercer
Elizabeth Mercer married John Brown
Jane Mercer
Diana Mercer

biographical:
The above information is part of the "Mercer Scam".
the information below incorporates some of it but also has a good description of the Mercer homestead in Virginia.
http://ourworld.compuserve.com/homepages/elledorado/item3body.html
The Mercer lineage was introduced into the Campbell line by the marriage of the two sisters Phoebe and Sarah Mercer to the two brothers William and Arthur Campbell. The Mercers were of Quaker stock, and their line goes back to a John Mercer, a merchant of New York City. He was an extensive land owner on Manhattan Island, his lands extending from about 76th Street northward. He was twice married. By his first wife, Elizabeth Bentley, daughter of William and Mary Catherine (Townley) Bentley, he had a son Gideon, and by his second wife, Mary Moore, a daughter Elizabeth.
Gideon Mercer was the father of Robert Mercer, who settled on the old Mercer homestead near Morgantown, W. Va. in 1766. Gideon Mercer was married twice. First to a Mary Harper, and after her death to her sister Sarah. So far as known there were no children by the second wife, but by the first wife Gideon Mercer had three sons: Napoleon and Job, twins; and Robert, born in 1741.
Elizabeth, the daughter of John Mercer by his second wife, was married to a John Brown, and by him had a daughter Elizabeth, born in 1747. This Elizabeth Brown became the wife of her first cousin Robert Mercer, the son of Gideon.
Robert Mercer was married to Elizabeth Brown on Sept. 1, 1766, the marriage taking place in Chester County, Pa., where the Brown family resided. Whether Robert Mercer and his father Gideon were also residents of this locality is not known, but the assumption is that they were. A granddaughter of Elizabeth Brown, Minerva Mercer, told the late Rev. James O. Campbell in 1901 that as a child she had lived with her grandmother, and that she was a “real Quaker,” and in her conversation always used the Quaker expressions “thee” and “thou.”
Following his marriage in 1766 Robert Mercer and his wife Elizabetth Brown settled on a tract of land about five miles northwest of the present Morgantown, W. Va., but then in Ohio County, Virginia. To them twelve children were born: Olive, born in 1767; John, born in 1768; Joseph, born April 7, 1770; Robert, born in 1772; Levi, born in 1780, Elizabeth, born in 1783; Rachel; Abner, born in 1787; Leah, born in 1791. The youngest daughter Leah married her first cousin Robert Mercer, a son of Job Mercer and his wife Margaret Gordon.
This old Mercer homestead is located in the center of a beautiful semi-circular valley far up in the West Virginia hills, about a mile and a quarter northward from Laurel Point, a small settlement of houses on the Fairmont Highway some four miles west of Morgantown. None of the original buildings are now in existence, the old log cabin home having been torn down since 1901. It was located just a few feet to the right of a present day log cabin that serves as a sort of outhouse to the main residence of frame construction.
Directly up the hill from the residence is an orchard containing the old Mercer burial ground. This plot is some 50 feet square, completely enclosed with a fence, and with three, or perhaps four, rows of graves, all marked with small sandstone slabs at head and foot, but a majority without identifying inscription. Near the top of the plot are three modern monuments, the center one marking the grave of Minerva Mercer, born in 1817, died in 1902. On the left side is a monument to William Mercer, a son of Abner, the father of Jesse Mercer, owner of the farm in 1933. Robert Mercer, the original settler, is buried in about the exact center of the plot, and his son Abner two or three graves to the left in the same row. As all graves in this row are without inscription they can be identified only approximately.

It was at this old homestead, and in the original log cabin that Joseph Mercer was born on April 7, 1770. He was married on Sept. 9, 1790 to Comfort Nottingham, and their marriage is on record at Winchester, Va. then the county seat of Frederick County, to which the area around Morgantown belonged.

John Mercer, an older brother of Joseph Mercer, was born at the old homestead on Oct. 21, 1768, and was married on September 12, 1792 to Ann Babb, for whose family Babb's Island in the Ohio River opposite East Liverpool, Ohio was named. Sometime between this marriage and the year 1800 the two brothers Joseph and John Mercer and their families came down the Monongahela River to Redstone Old Fort, now Brownsville, Pa., where they tarried until early in the year 1802 when they made a second move, and came and settled on the south side of Beaver County, Pa.

Their residence here was of some duration, in Joseph's case at least 20 years, but each made a subsequent and final move to the state of Ohio, meanwhile leaving descendants behind to perpetuate the name in Beaver County. John Mercer seems to have been the first of the two brothers to migrate, making a settlement in Belmont County, Ohio, where some of his children had preceded him. His two sons, Reece and Silas, remained behind and established their own homes near the West Virginia line. Joseph Mercer maintained his residence in the county until 1822, when he followed his younger son Joseph to a new settlement in Jackson County, Ohio. His eldest son Nottingham lived and died in Mercer County, Ohio, and was married to a Hannah Traxler. Nottingham was a soldier in the War of 1812, a member of Captain William Calhoun's company, 138th Regiment, recruited on the south side of Beaver County. This company marched to Erie, Pa., by way of Meadville, and there served a tour of duty during the months of January, February, and March, 1814.

It must of been during Joseph Mercer's residence on Service Creek that his daughter Phoebe had her encounter with a pack of wolves. Quite likely, too, it was in the dead of winter at the end of the protracted and severe cold wave, when the animals were ravenous with hunger. Phoebe had ridden her saddle horse over the forest trail to the store at Burgettstown, Pa., the buying center of the day, to purchase some cotton batting for a comfort[er] she was making. While on the homeward journey a pack of wolves encountered her trail, and started in pursuit. By racing her horse she hoped to out distance the pack, and reach her home in safety, but as the minutes flew by she noticed that the space between them was becoming ever narrower, and the pack was revealing no inclination whatever of relinquishing the chase. Her horse showing signs of exhaustion she knew that some expedient must be adopted to permit the animal to regain its wind, else both horse and rider would become a prey to the hungry beasts. Grasping a handful of cotton she threw it behind her speeding horse and noted with satisfaction that the wolves stopped and sniffed it before continuing the pursuit. This enabled her horse to gain some little ground before the chase was resumed. Every few moments now she would drop a wad of cotton, and always with the same result. When she finally reached the shelter of her own home her supply of cotton was completely exhausted.

John Mercer lived to be over 90 years of age, and died at his home in Belmont County. Joseph Mercer died in Jackson County on Aug. 7, 1835. Both he and his wife, together with several other Mercer's are buried on the Emery Sim's place about eight miles out of Jackson, Ohio on the Four Mile Pike.

Joseph Mercer and his wife Comfort (Nottingham) Mercer were the parents of seven children: Nottingham; Elizabeth; Robert, born in December 25, 1795; married Betsey Boyd Smith, daughter of David and Mary Boyd Smith; Mary, born 1797; Phoebe, born February 14, 1800, married about 1832 William Campbell, son of William and Agnes (Vance) Campbell; Sarah, born March 7, 1802, married February 22, 1822 to Arthur Campbell, son of William and Agnes (Vance) Campbell; Joseph, born 1804.

Note: The descendants of Phoebe Mercer (Campbell) No. 50 and Sarah Mercer (Campbell) No. 52 are not repeated here, as they will be found in their appropriate place in the Campbell Geological Records.
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In July of 1988, I made the first of many solo trips to the area around the WV panhandle, to dig up family history. My favorite places are small-town libraries, which often have collections of local history and genealogy (or can tell you who does).
One of my first stops was at the Carnegie Library in Beaver Falls, PA, where I met librarian Vivian McLaughlin. Vivian showed me to the library’s History Center. She retrieved her “Mercer” folder for me, and produced the following report. I had a vague recollection of my favorite aunt showing me a copy of this report years before, but I couldn’t be sure.

I read this report avidly, and decided ~ then and there ~ that I was going to find the Mercer Homestead described in its pages. Through a remarkable series of events, I did just that, and had quite an adventure in the process.

Years had passed since the report was written, but the site was unmistakable. It is in a semi-circular valley...near Laurel Point. The orchard and the fence are no longer there. But “directly up the hill from the residence” there are “three modern monuments” in the “old Mercer burial ground”.

This report was meticulously typed, but bears neither a date, nor an author’s name. It does contain a statement about “Jesse Mercer, owner of the farm in 1933.” From this, we can infer that the report was written no earlier than 1933.

Because this report refers to another, on the Campbell family, I decided (sometime later) to contact the Carnegie Library in Beaver Falls in hopes of getting a copy of the Campbell report. I received copies of two Campbell reports: one dated 1932, written by Rev. James O. Campbell (whose 1901 experiences at the homestead are mentioned in the Mercer report); the other dated 1945, written by W. Sutherland Campbell.

The similarities in format between 1945 report and the Mercer Genealogical Record are so strong, I conclude that W. Sutherland Campbell or his associates created the Mercer writeup, and probably did so around 1945.

I will also point out that none of these reports bears a copyright notice. It is fair to assume that these writers were motivated, above all, by a desire to share their knowledge with others.

Dolores Grahom Doyle has authored the book "Three Hundred Years in America with the Mercers" with info about John Mercer in Belmont