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.