Born: January 7, 1875, near Atlanta, Georgia.
Died: May 11, 1938, Temple, Georgia.
Buried: Asbury Cemetery, Temple, Georgia.
Hamp was the son of Pliny Isaac Sewell and Mary Annie Lee, and husband of Elizabeth Myrtice
He studied music with Anthony Showalter and, after working as a merchant and farmer, was an evangelistic singer with Rev. Charles Dunaway, starting in 1909.
He worked in the evangelism field throughout the southern United States for over 25 years, and wrote some 500 songs.