1880 United States Federal Census
Name: Nathaniel G. Murphy
Home in 1880: Jacksonville, Obion, Tennessee
Age: 71
Estimated Birth Year: abt 1809
Birthplace: North Carolina
Relation to Head of Household: Self (Head)
Father's birthplace: Virginia
Mother's birthplace: North Carolina
Neighbors: View others on page
Occupation: Farmer
Marital Status: Widower
Race: White
Gender: Male
Household Members: Name Age
Nathaniel G. Murphy 71
George Murphy 24 son
Robert Murphy 34 son
Anna Murphy 26 son's wife
Eliza Murphy 3 granddaughter
Robert Murphy 7M grandson
Adaline Patton 34 servant
Elizabeth Patton 6 servant's child

1850 United States Federal Census
Name: Nathaniel Murphy
Age: 41
Estimated Birth Year: abt 1809
Birth Place: North Carolina
Gender: Male
Home in 1850(City,County,State): District 1, Obion, Tennessee
Family Number: 137
Household Members: Name Age
Nathaniel Murphy 41 Farmer
Eliza Murphy 41 wife
Elizabeth Murphy 13 daughter
James Polk Murphy 11 son
John Polk Murphy 9 son
Adeline Murphy 6 daughter
Robert Murphy 5 son
Hugh Murphy 3 son
Sarah Murphy 8 months daughter
William Warren 20 farmer

Tennessee State Marriages, 1780-2002
Name: Nathaniel G Murphy
Spouse: Eliza V Morris
Marriage Date: 26 Nov 1833
Marriage County: Rutherford
Marriage State: Tennessee

Looks like he may not have had military service.

JR