Muhllenberg Co., KY Abstracts of wills and Administrations 1799 - 1877, Marian G. Hammers 1968, FHL Sacramento: 976.983 W224h, 7 Jul 2000:
John Armstrong, will, of Muhlenberg County, dated May 3, 1808. Wife, Mary Armstrong, son, George Armstrong, daughter, Jane Wright, son James Armstrong, daughter Mary Billings, son Matthew Armstrong, daughter, Peggy Smith, Elizabeth Smith, son John Armstrong. Names wife, Mary Armstrong and son George Armstrong as executors. Witness: William Thompson, Samuel Handly and Jacob Anthony. Proven January County Court 1818. Book II, Page 85 - 87

Children: from above but in tabular format - Wife, Mary Armstrong
George Armstrong
Jane Wright
James Armstrong
Mary Billings
Matthew Armstrong
Peggy Smith
Elizabeth Smith
John Armstrong

Found the following at VA GenWeb:
RICHARD & MARY YANCEY OF MECKLENBURG COUNTY - COURT RECORDS
Plaintiffs:

Absalom Yancey, Robert Yancey, Zachariah Yancey, Thomas Yancey, William Nuckolls, Richard Nuckolls, Lewis Nuckolls, Mary Armstrong

1810 KY Census Index , Page 472
Armstrong, George KY MUHLENBERG CO. 397 1810 = 00100-1001000 Son 16 to 26 wife 26 -45 daughter under 10
Armstrong, John KY MUHLENBERG CO. 397 1810 = 00001- 0000100 Father and mother both over age 45
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FamilySearch info seems a generation off. need to recheck the census dates and will to see if this fits.

Name: John ARMSTRONG
Sex: M
Birth: Abt 1740
Death: JAN 1818 in , Muhlenburg Co., Kentucky
Burial: , Muhlenburg Co., Kentucky
Change Date: 8 APR 1999 at 12:16:28
Father: ARMSTRONG
Marriage Mary b: Abt 1744
Married: Abt 1765

Children
1. Jane ARMSTRONG b: Abt 1766 in ,,Of Kentucky,USA
2. James ARMSTRONG b: Abt 1768 in ,,Of Kentucky,USA
3. Mary ARMSTRONG b: Abt 1770 in ,,,USA
4. Mathew ARMSTRONG b: Abt 1772 in ,,Of Kentucky,USA
5. Peggy ARMSTRONG b: Abt 1774 in ,,,USA
6. Elizabeth ARMSTRONG b: Abt 1776 in ,,,USA
7. John ARMSTRONG b: Abt 1778 in ,,,USA
8. George ARMSTRONG b: 1780 in ,RUTHERFORD CO,North Carolina