In 1838, Thurlow Weed asked him to edit a Whig newspaper to support Seward's campaign for governor, and he went on to fight for emancipation of the slaves, culminating in his "The Prayer of Twenty Millions" editorial.  
He signed the bail bond for Jefferson Davis after the Civil War.  In 1838, Thurlow Weed asked him to edit a Whig newspaper to support Seward's campaign for governor, and he went on to fight for emancipation of the slaves, culminating in his "The Prayer of Twenty Millions" editorial.  FTP, identify this politician and editor of the New York Tribune, who unsuccessfully ran for President in 1872.
He signed the bail bond for Jefferson Davis after the Civil War.  
Horace Greeley