The other day I got an email from Norm Luppino, a historical researcher from Bradenton, Florida. He was kind enough to send along the above photos of John Riggin's grave.
According to the information that I have, Riggin, a member of the Cyclone Club, was born in St. Louis in 1837. Obviously, his tombstone has his year of birth as 1835. He worked for his father as a real estate agent and, during the Civil War, he served as a staff officer to General Grant, eventually being promoted to Brigadier General. After the war, he moved to Florida and died in Bradenton in 1886.
Much thanks to Norm for passing along the grave photos.