The Senate will conclude a presidential impeachment trial on Wednesday, the third in the last 152 years, in case you’re keeping count. If the pundits are right, this attempt to remove a sitting president from office will go down in flames like the first two.

We are reminded every time one of these political dog and pony shows erupt that President Andrew Johnson beat the rap in his trial by just one vote. But who was that infamous Republican holdout? Why did he vote to acquit, and what happened to him afterward?