Who is the person in the south who rooted for the north at the end of the civil war?

At the end of the Civil War, one notable figure from the South who supported the North was General James Longstreet. Initially a Confederate general, Longstreet became a staunch advocate for Reconstruction and reconciliation between the North and South. He aligned himself with the Republican Party and supported policies that favored integration and civil rights for freed slaves, which made him a controversial figure in the post-war South.