Most of my searching has been done here: http://www.familysearch.org/
I also have the advantage of someone else having done some of the research to confirm what I thought to be correct. Once you get back to the census records that do not show names of all in the household, it get really hard to trace backwards. I was able to trace back to Elisha that way along with help from death records showing parents names. Once I got that far back, I was unable go go further.
My info on Elisha states he was born in Burke County NC so I doubt if you will find anything on the PA Wagon Road. The info I have on Elizabeth Balloo also stated that she was born in Burke Co. NC as well but I cannot find any Balloo's or Ballew's in the area around those times.
As for Samuel A. Anderson, son of Elisha and Elizabeth, I have a copy of his death certificate which I have attached here. This gives date of birth and death and cause of death along with parents names as well.
I'm not sure of whether we are German or Irish descent but I will continue to learn more as I go for sure.
A little more info I have found on Samuel is that he was married to Sarah Elmaria Green. Both are buried at Hickory Stand Cemetery in Brasstown NC. They did have a son named Silas Leon Anderson b. abt. 1859. All of this research was done by someone else and the information was shared with me by an uncle that still resides in Brasstown, NC. This document shows the your family line through Silas Harrison Anderson d. Apr 1973. It also shows his siblings as Arthur Alexander, John, Alice, Robert, Abraham, and Ardell. I have a scan of this document (38 pages) and could send you a pdf file if you would like to have a copy. It is about 15 megabytes so it may be a slow download for you. It is not my work so I cannot take the credit but it does contain a lot of notes/citations at the end of the document for reference.
I could also send individual pages if you only want direct line info for your family line.