Not exactly. I'm afraid that the verdict is still out on that matter of history. As it stands today there are at least two known corroborating accounts that claim a plot was hatched to arrest Taney but was soon aborted. The first is Ward Hill Lamon, a close Lincoln friend and the federal marshall who it is said to have been responsible for making the arrest. The second is George William Brown, the mayor of Baltimore who learned of the plot and went to Taney's courtroom to warn him of it.
Not really. But I'm curious, how did Mayor Brown learn of the 'plot'? I wonder who told him? Was it Lamon? I believe that according to his account only he and Lincoln were privy to the plan. Are you suggesting that Lamon told Brown, an ardent foe of the administration?