Also that Mrs. Lincoln was somewhat responsible for that appellation of "Butcher." I suppose Haig some fifty plus years later made Grant look like a piker when it came to casualties. It may have been a terrible mistake but it was putting into action the strategy of bleeding the Southern forces and destroying the Southern forces as the primary goal, not the capture of territory.
I was also reminded of the trip that Lincoln took, also on the River Queen, to Hampton Road, Virginia to meet with Southern delegates to discuss "the issues involved in the exisiting war," in Jefferson Davis' parlance, which, as Lincoln reported to Congress, "ended without result" and with no compromise of the Union position.
I am not sure why you refer to the painting as "ironically." They did bring peace to the United States, if not in the way the rebellious states anticipated. Peace was obviously only temporary as, yes, the fighting stopped, but little peace was brought to the Southern states, despite the message conveyed in Lincoln's Second Inauguaral Address, perhaps one of the greatest speeches in Amrerican history (for an incredible analysis of this speech, read Ronald White's Lincoln's Greatest Speech; it is an amazing book).