My Leah L. Pettigrew - same birthdate that you have - was born in Monroe County, Tenn. She was the daughter of Ebenezer Pettigrew and Lucinda Smith. She married Nimrod Gaines in 1848 and died 20 Jan 1900 in Dent County, Missouri. There are no Absolum Pettigrews on my line that I know of. Here's my source -hope this helps.
Family Data Collection - Individual Records Record
Edmund West, comp. Family Data Collection - Individual Records. [database online] Provo, UT: Ancestry.com, 2000.
Name: Leah L Pettigrew Spouse: Nimrod Gaines Parents: Ebenezer Pettigrew , Lucinda Smith Birth Place: Monroe Co, TN Birth Date: 9 October 1824 Marriage Date: 1848 Death Place: Dent Co, MO Death Date: 20 January 1900