Thanks for letting me know what you found.That's great that you found the name of Eli's mother.
I think you are on to something about Eli's grandfather.In the 1850 and 1860 censuses Bennett was in Hamilton Co. TN, just north of the border with Catoosa and Walker Cos. GA.Chattanooga is in Hamilton Co.
1850 census:District 27, Hamilton Co. TN Bennett Petgrw 49 b. VA Tabitha 49 b. NC John 18 James 16 Newton 14 Bennett 11 Mary 9 Elizabeth 7 Jane 3
All children b. TN
1860 census:District 4, Chattanooga P.O., Hamilton Co. TN Bennet Pedigrew 58 b. GA, railroad laborer John 27 Newton 22 Bennett 20 Mary 18 Sarah 15 Jane 12
All the children b. TN
So, since James is missing from Bennett's family in the 1860 census, it is certainly possible that he is then married and living over the border in Catoosa Co. GA.
Something to consider in your descendancy list.Bennett's parents were debated at one time and still might be. Rather than John and Lear Owen, some say James and Leah Blackwell:
http://boards.ancestry.co.uk/thread.aspx?mv=flat&m=399&p=surnames.pettigrewhttp://boards.ancestry.co.uk/thread.aspx?mv=flat&m=399&p=surnames.pettigrew "George (Pettigrew) and Jean/Jane had ten children, half of them sons; George's descendants spread to TN, MO, and AR.... Their eldest child was James (1776, Abbeville SC – 1826, Baldwin Co GA). On 25 Feb 1800 he married Leah (Lear) BLACKWELL (1775 - 1826). They had three sons: a. Ebenezer (A.?) (ca1800 - 1839) m. 27 Mar 1816 (21?) to Lucinda SMITH (ca1795 - 1875) b. Bennet B. (1801 - >1860) m. 27 Jan 1825 to Betha (Tabetha) CODDLE (1802 - ~1850) c. Edwin B. (1803 - 1889) m. 1st on 17 Nov 1824? to Rebecca MARLOW; m. 2nd to “Widow” BROWN, m. 3rd in 1839 to “Widow” Nancy Ann Ash (Jones)."
The Pettigrew line you connected to is well-researched, and much discussed over the years.Just search the Pettigrew genforum and ancestry boards.
If this is indeed your line, you are lucky, for its Ireland connection is well-established, and its American migration is also well-documented.
Richard Pettigrew left you a post but unintentionally left off the weblink to a page with Eli Johnny mentioned: