David Ramsay Clendenin (June 24, 1830 – March 5, 1895) was an American teacher and career officer.
[1] He was a teacher until the outbreak of the American Civil War when in early 1861 he joined the District of Columbia Militia as a private.
[1] On September 18, 1861, he was appointed a captain of the 8th Illinois Cavalry and promoted to major the same day.
[1] Clendenin was one of 9 members of the military commission that tried and convicted the Lincoln conspirators from May 8, 1865, to July 15, 1865.
[1] On January 13, 1866, President Andrew Johnson nominated Clendenin for appointment to the grade of brevet brigadier general of volunteers, to rank from July 11, 1865, and the United States Senate confirmed the appointment on March 12, 1866.