Noteworthy Mugwumps
- Charles Francis Adams, Jr., president of the Union Pacific Railroad and the American Historical Association
- Henry Adams, author
- Edward Atkinson, entrepreneur and business executive
- Charles William Eliot, President of Harvard University
- E. L. Godkin, editor of The Nation
- Thomas Nast, political cartoonist
- Carl Schurz, former Senator from Missouri and Secretary of the Interior, editor of the Saturday Evening Post
- Moorfield Storey, lawyer and NAACP president from 1909–1915
- William Graham Sumner, social scientist, Yale University
- Mark Twain, author, self-identified as a Mugwump in his essay, Christian Science
- Horace White, editor of the Chicago Tribune*
- Amanda Mcdonald V.C.A studen Telford College
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