The Town of Wise may have still had the name Gladeville at that time. See this link: http://www.wisecounty.org/wise_history.html

Daughter of Johann Saylor b 1770 and Elizabeth Kaiser Saylor b. 1772. Wife of George Washington Gilley 1808-1865

Tennessee State Marriages, 1780-2002 about George Gilley
Name: George Gilley
Spouse: Nancy Sailer
Marriage Date: 1 Mar 1838
Marriage County: Washington

1850 United States Federal Census about Nancy Gilley
Name: Nancy Gilley
Age: 31
Birth Year: abt 1819
Birthplace: Tennessee
Home in 1850: District 31, Lee, Virginia
Gender: Female
Family Number: 354
Household Members:
Name Age
George W Gilley 40 Farmer $600 farm value
Nancy Gilley 31
John Gilley 11
Louisa Gilley 9
Elizabeth Gilley 7
Jessee Gilley 5
George W Gilley 3
Mary J Gilley 1

1860 United States Federal Census about Nancy Gilley
Name: Nancy Gilley
Age in 1860: 41
Birth Year: abt 1819
Birthplace: Tennessee
Home in 1860: Wise, Virginia
Gender: Female
Post Office: Big Stone Gap
Value of real estate: $3,880
Household Members:
Name Age
Geo W Gilley 52
Nancy Gilley 41
Elizabeth Gilley 18 Seamstress
Jessee Gilley 15
Geo W Gilley 13
Mary Gilley 12
Sarah Gilley 8
Letitia Gilley 6
Catharine Gilley 31
William H H Gilley 3/12

1870 United States Federal Census about Nancy Gilley
Name: Nancy Gilley
[Nancy Saylor]
Age in 1870: 50
Birth Year: abt 1820
Birthplace: Tennessee
Home in 1870: Richmond, Wise, Virginia
Race: White
Gender: Female
Post Office: Big Stone Gap
Value of real estate: $800
Household Members:
Name Age
Nancy Gilley 50
Mary Gilley 21
Sarah Gilley 19
Lintia Gilley 16
Catherine Gilley 13
Nancy Gilley 8

1880 United States Federal Census about Nancy Gilly
Name: Nancy Gilly
[Nancy Gilley]
[Nancy Saylor]
Age: 62
Birth Year: abt 1818
Birthplace: Tennessee
Home in 1880: Richmond, Wise, Virginia
Race: White
Gender: Female
Relation to Head of House: Self (Head)
Marital Status: Widowed
Father's Birthplace: Pennsylvania
Mother's Birthplace: Virginia
Occupation: Keeping House
Name Age
Nancy Gilly 62

1900 United States Federal Census about Nancy Gilley
Name: Nancy Gilley
Age: 82
Birth Date: Apr 1818
Birthplace: Tennessee
Home in 1900: Gladesville, Wise, Virginia
[Town of Wise]
Race: White
Gender: Female
Relation to Head of House: Mother-in-law
Marital Status: Widowed
Father's Birthplace: Pennsylvania
Mother's Birthplace: Pennsylvania
Mother: number of living children: 9
Mother: How many children: 12
Household Members:
Name Age
Jonathan E Lipps 48 Merchant and Farmer
Sarah C Lipps 48
George R Lipps 15
Elbert B Lipps 9
Morgan E Lipps 19 Abstracter of Titles
Laura E Lipps 20
Nancy Gilley 82

1910 United States Federal Census about Nancy Gilley
Name: Nancy Gilley
Age in 1910: 92
Birth Year: 1818
Birthplace: Tennessee
Home in 1910: Gladeville, Wise, Virginia
Race: White
Gender: Female
Relation to Head of House: Mother-in-law
Marital Status: Widowed
Father's Birthplace: Pennsylvania
Mother's Birthplace: Pennsylvania
Household Members:
Name Age
Johnathan E Lipps 58
Sarah C Lipps 58
Elbert B Lipps 19
Nancy Gilley 92