George Mifflin Dallas was an American politician and diplomat who served as mayor of Philadelphia from 1828 to 1829, the 11th vice president of the United States from 1845 to 1849, and U.S. Minister to the United Kingdom from 1856 to 1861.

James Buchanan Jr. was an American lawyer, diplomat, and politician. He served as the 15th president of the United States from 1857 to 1861, as the secretary of State from 1845 to 1849, and represented Pennsylvania in both houses of the U.S. Congress. He was an advocate for states' rights, particularly regarding slavery, and minimized the role of the federal government preceding the Civil War.