Charles Stark Draper
Stark's cousin, Charles Stark Draper, was a prominent inventor. The uncle of Lloyd Stark and Charles Stark Draper, state representative, James O. Stark was a prominent supporter and adviser of presidential contender and Speaker of the House, Champ Clark (despite this connection, Clark's son Bennett, Missouri's other Senator, crucially supported Truman in 1940) - and the husband of the niece of Republican anti-slavery activist Elihu Washburne.