John Pease Sanderson (November 28, 1816 – June 28, 1871) was a delegate of the Florida Secession Convention in Tallahassee, and then a Florida member of the Congress of the Confederate States during the American Civil War.
Before the civil war erupted, he was a lawyer, secessionist Democrat and was part of the Planter Class in Jacksonville, Florida.
He was a delegate to both the Florida Secession Convention of 1861 and then to the Confederate Provisional Congress from February 5–17, 1862, replacing George Taliaferro Ward.
Following her death on April 27, 1857, he later married her sister Marion R. Harrison on July 28, 1858.
[1] He died June 28, 1871, in Manhattan, New York City.