American military officer, spy, surveyor, poet and author
During the Reconstruction era, he joined the Ku Klux Klan chapter in Hinds County and Madison County. An essay he wrote about the Klan was also published in The Ku Klux Klan or Invisible Empire by Mrs S. E. F. Rose. He is quoted as writing, "In the courts of this invisible, silent, and mighty empire, there were no hung juries, no laws delayed, no reversals, on senseless technicalities by any Supreme Court, because from its Court there was no appeal, and punishment was sure and swift, because there was no executive to pardon."
Fontaine authored several books. He composed poems, like Oenore, Only a Soldier or Dying Prisoner in Camp Chase, and claimed to have written "All Quiet Along the Potomac Tonight". He published his memoir, My Life and My Lectures. Another book was about the Ku Klux Klan: The Cause and the Effect of the Ku Klux Klan in the South.