Maryland (3) : successor : John Creswell (UU) | John Creswell (UU) : date_of_successors_formal_installation : March 9, 1865 | Vacant : reason_for_change : Sen. Thomas H. Hicks died during previous congress | Maryland (3) : vacator : Vacant
Sen. Thomas H. Hicks caused a change of staff on March 9, 1865.