I have a bit of information about these two and am also looking for more. This is what I have. It begins with a Mackey so that FTM would let me add siblings... I don't know what his name was and there are some things here that are conjecture/research leads.
Generation No. 1
1. Mackey1 was born Unknown, and died Unknown. Wife Unknown.
Children of Mackey are:
+ 2 i. John2 Mackey, born 1726 in Ireland; died 1787.
3 ii. William Mackey, born Unknown; died Unknown.
4 iii. Thomas Mackey, born Unknown; died Unknown.
Notes for a possible hit on Thomas Mackey:
In the cemetery of Old Hebron Presbyterian Church near Commerce, GA is a marker to the memory of Samuel Mackie 1761-Dec. 5 , 1845 and a marker for Thomas McKie.
The stone for Thomas McKie reads:
"Died ca. 1797, Father of JOHN McKIE, WILLIAM McKIE, SAMUEL McKIE, RACHEL BREXEY STRICKLAND, MARTHA FLEMING, MARY HEMPHILL, ROSANNAH TEMPLETON , A Revolutionary War Patriot from *Burke Co., NC* to Elbert Co, Ga., Erected in 1973."
Information taken from Walter Scott McCleskey's 1997 version of The McCleskey Family in Georgia.
I think you're talking about the Mackeys I am researching and I was really interested in seeing the alternative spelling. I think the Mary Hemphill you mentioned is Mary Ann Mackey , born in 1758 in County Tyrone, Ireland and died in 1804 in Burke Co, NC. She married Thomas Hemphill in 1773. Her parents were Thomas Mackey and Rosannah McEntire(I think). THey both died in Elbert County, GA. They also had a son named Samuel who married Mary Clark.
Generation No. 2
2. John2 Mackey (Mackey1) was born 1726 in Ireland, and died 1787. He married Ann Alexander 1751. She was born 1735, and died Unknown.
Notes for John Mackey:
Immigrated from Northern Ireland (confirm?, probably Ulster) to Chester Co, PA shortly after their marriage in 1751. His two brothers were supposedly with them. John and Ann settled in Chester Co, PA until about 1759 when they moved to Burke Co, NC.
From another Internet Researcher: I have a photocopy of a four page typewritten article entitled "Mackey Family" by Albert McLean. I obtained this, I believe, from the Old Buncombe County Genealogical Society (OBCGS). The author states that John Mackey, "the ancestor of the McDowell County family of the name", was born in Ireland in 1726, and in 1751 married Ann Alexander and emigrated to America accompanied by his brothers William and Thomas "and other members of their family". They landed in Philadelphia and settled first in Chester Co PA, moving to SC in 1767, but by 1776 John Mackey "and members of his family were living on the frontiers of Rowan (now McDowell) County, N. C." Though Mr. McLean initially proclaims John Mackey to be "the anscestor of the McDowell county family", a close reading of this document reveals the following: "In 1790 there were six families of Mackeys living in Burke [now McDowell] county who it is believed were descendants of John OR HIS BROTHER THOMAS". Mr. McLean says that John Mackey died at his home on Mackeys creek in 1787, but does not know when Ann died, and believes they were buried "in the cemetery of old Ebenezer church near Greenlee".
Children of John Mackey and Ann Alexander are:
5 i. Mary3 Mackey, born December 10, 1756 in Chester Co., PA; died 1845. She married Capt. Joseph Dobson, Jr. March 18, 1779; born 1756 in Lunenburg Co., VA; died 1836.
6 ii. Lt. James Mackey, born May 24, 1759 in Chester Co., PA; died June 30, 1834 in Six miles from Clarksville, MO.
7 iii. John Mackey, Jr., born 1766; died November 09, 1840 in Pike Co., MO.
8 iv. Elizabeth Mackey, born Unknown.
9 v. Annie Mackey, born 1770.
10 vi. Jane Mackey, born Unknown; died Unknown.
11 vii. Thomas Jefferson Mackey, born Unknown; died Unknown.
12 viii. Alexander Mackey, born Unknown.
13 ix. Nancy Mackey, born Unknown.
+ 14 x. William Mackey, born 1775 in Rowan Co (now Burke Co), North Carolina; died Bef. 1850 in Sumner Co., TN.
Generation No. 3
14. William3 Mackey (John2, Mackey1) was born 1775 in Rowan Co (now Burke Co), North Carolina, and died Bef. 1850 in Sumner Co., TN. He married Mary Keller Abt. 1797, daughter of Jacob Keller. She was born Unknown, and died Abt. 1820 in near Ashville, Buncombe Co., NC.
Notes for William Mackey:
William Mackey, born about 1775, Rowan Co., NC (now Burke); died of exposure in Sumner County, TN on "Cold Friday" sometime after 1840 and before 1850. Family legend tells that William was seen to ride his horse into the barn. When he did not come into the house, someone went looking for him and found him astride his horse frozen to death. He is buried in Sumner Co., TN. He married Mary Keller. She was probably the daughter of Jacob Keller and the granddaughter of Hans Michael Keller.
Family legend tells that Mary was killed and scalped in an indian massacre at a religious meeting in Buncombe Co. NC near Ashville, probably in the latter part of 1820.
from Joan Mezger
Child of William Mackey and Mary Keller is:
15 i. Mary4 Mackey, born January 27, 1808 in North Carolina; died May 15, 1883 in Morganton, NC. She married Peter McKibbon Denton April 26, 1827 in Morganton, NC; born February 20, 1804; died September 26, 1879 in Morganton, NC.
Notes for Peter McKibbon Denton:
Came to North Carolina from Virginia (Pittsylvania Co.?) with his brother Anderson Denton before 1820. They and their wives were Charter Members of the Pleasant Hill Baptist Church, Enola, NC.