Clem Graver
Celinus "Clem" Graver was a politician in Illinois who was kidnapped on June 11, 1953, and was never found. Background
He was a precinct captain on Chicago’s west side, and organized voters for Republicans. He served as a state representative who notably broke with the bloc over what became called McCormick Place. He was known to have been married. Disappearance and aftermath
Men escorted him away from his home after he pulled up in his driveway and he was never seen again, nor were there any suspects nor ransom demands. The case remains unsolved. See also 
List of kidnappings
List of people who disappeared

References

1950s missing person cases
20th-century American politicians
Kidnapped politicians
Missing person cases in Illinois
Politicians from Chicago
Republican Party members of the Illinois House of Representatives
Year of birth missing (living people)