Saw your posting on genforum and wanted to see if there is any connection.
My wifes aunt, Jo Ella Abercrobie is the daughter of Rev. Christopher Robert Abercrombie (March 28, 1873 - May 13, 1935), Greenville, SC (He was supposedly from Sandy Flat). He was brother to Dicy Mahaly Abercrombie (1866-1948), David Martin Abercrombie and "Harrison" Abercrombie.Their father was John Harris (Harrison?) Abercrombie of Pickens, SC (born: December 29, 1846; died: November 02, 1935 ) and buried at Mountain View Baptist Church, Six Mile, SC.John Harris Abercrombie's spouse was Cynthia Carlton.
Six Mile & Salem are not that far apart!
Your John Harris (b:1821) was age 25 when my John Harris was born.