Background:

Three testers have a common ancestor, John ca1712 Garrison. John had two sons, John 1740 Garrison and William 1746 Garrison. Tester B (in the following examples) identifies his oldest known ancestor as John 1800 Garrison, making him a descendant of either John 1740 or William 1746.

From an analysis of FTDNA’s Y700 STR tests submitted to and conducted by YFull.com:

Tester A: YF65039 A descendant of John 1740 Garrison (the author of this website)
Tester B: YF63622 A descendant of John 1800-1883 Garrison
Tester C: YF63601 A descendant of William 1746 Garrison

From YFull STR Variants Report:

Sample From Tester A / STR Marker / Shared With Tester

private mutation from Tester A / STR DYR455 / shared with YF63622 (Tester B)
private mutation from Tester A / STR DYS561 / shared with YF63601 (Tester C)
private mutation from Tester A / STR DYS510 / shared with YF63622 (Tester B)
private mutation from Tester A / STR DYS517 / shared with YF63622 (Tester B)
private mutation from Tester A / STR DYS722 / shared with YF63622 (Tester B)
private mutation from Tester A / STR DYS712 / shared with YF63622 (Tester B)

Summary:

Tester B YF63622 shares 5 private mutations with Tester A
Tester C shares 1 private mutation with with Tester A
Tester C shares no private mutations with Tester B

Conclusions:

Given these test results, Tester B (YF63622) and his ancestor, John 1800 Garrison, must be descendants of George 1742 Garrison, son of Aaron 1715 Garrison and Elizabeth Bridwell.

Facts:

John and his brother, William, both marry and show up (individually with their respective families) in the 1830 Harmony, Washington County, Missouri, census.

William is in the 1860 Crawford County, Missouri census living with his son, Elijah Isaac Garrison. William is also shown living with his brother, John, in the 1870 Crawford County, Missouri, census.

John and William’s mother, Eleanor Bridwell Garrison, is shown living with John in the 1860 census, age 90. She is shown, living alone, in the 1850 Mason County, Kentucky, census.

John’s older brother, Alexander, married Lucretia Reisey “Resa” Broshears of Bracken County, Kentucky.

John and all of his siblings are shown as being born in Virginia.

John 1800 Garrison’s Parents

John’s parents are shown in the 1810 Stafford County, Virginia census and the 1820 Mason County, Kentucky census:

NAME: George Garrison
HOME IN 1810 (CITY, COUNTY, STATE): Falmouth, Stafford, Virginia
FREE WHITE PERSONS - MALES - UNDER 10: 3
FREE WHITE PERSONS - MALES - 16 THRU 25: 1
FREE WHITE PERSONS - MALES - 45 AND OVER: 1 George
FREE WHITE PERSONS - FEMALES - UNDER 10: 5
FREE WHITE PERSONS - FEMALES - 10 THRU 15: 1
FREE WHITE PERSONS - FEMALES - 16 THRU 25: 1
FREE WHITE PERSONS - FEMALES - 26 THRU 44: 2
FREE WHITE PERSONS - FEMALES - 45 AND OVER: 1 Ellen

Name: Geo Garrison [George Garrison]
Home in 1820 (City, County, State): Mason, Kentucky
Enumeration Date: August 7, 1820
Free White Persons - Males - Under 10: 2
Free White Persons - Males - 10 thru 15: 2
Free White Persons - Males - 16 thru 18: 1
Free White Persons - Males - 16 thru 25: 1
Free White Persons - Males - 45 and over: 1 George
Free White Persons - Females - 26 thru 44: 1 Ellen

John’s mother, Ellen Bridwell Garrison, is shown living alone in the 1850 Mason County, Kentucky census

Name: Ellen Garrison
Age: 80
Birth Year: abt 1770
Birthplace: Virginia
Home in 1850: District 1, Mason, Kentucky, USA
Gender: Female
Family Number: 94
Household Members:
Name Age
Ellen Garrison 80

She is shown with son, John 1800 Garrison, in the 1860 Crawford County, Missouri census.

Name: Elon Garrison [Ellen Garrison]
Age: 90
Birth Year: abt 1770
Gender: Female
Birth Place: Virginia
Home in 1860: Courtois, Crawford, Missouri
Post Office: Osage
Dwelling Number: 383
Family Number: 382
Household Members:

Name Age
John Garrison 61
Elizabeth Garrison 50
James Garrison 18
L L Garrison 16
Rebecca Garrison 11
J D Garrison 9
Jeremiah Garrison 7
Elon Garrison 90