Who were the first black US Senators from Mississippi during the Reconstruction era after the US Civil War?

Senator Hiram Rhodes Revels was the first African American to serve in the US Congress and in the US Senate representing Mississippi from 23 February 1870 until 3 March 1871. He was a minister, Civil War Union Army Chaplain who served at Vicksburg and a college president well known as an orator and a champion of Civil Rights.