Reverdy Johnson

Reverdy Johnson (May 21, 1796February 10, 1876) was an American politician, statesman, and jurist from Annapolis, Maryland. He gained fame as a defense attorney, defending notables such as Sandford of the Dred Scott case, Maj. Gen. Fitz John Porter at his courts-martial, and Mary Surratt, alleged conspirator in the assassination of Abraham Lincoln. A former Whig, he was a strong supporter of the Union war effort. At first he opposed wartime efforts to abolish slavery until 1864, and in 1865 supported the 13th Amendment banning slavery.

Johnson served as United States Minister to the United Kingdom from 1868 to 1869. Provided by Wikipedia