Robert Cumming Schenck (1809–1890)

State of Residence: Ohio
  1. Envoy Extraordinary and Minister Plenipotentiary (Brazil)
    Appointed: March 12, 1851
    Presentation of Credentials: August 9, 1851
    Termination of Mission: Presented recall on October 8, 1853
  2. Envoy Extraordinary and Minister Plenipotentiary (United Kingdom)
    Appointed: December 22, 1870
    Presentation of Credentials: June 23, 1871
    Termination of Mission: Left post on March 3, 1876