John Surratt's real parents?

[Thomas Thorne]

If John Surratt had been convicted and given Life, I don't think the military commission would have sentenced Mary to death. Given Johnson's idiotic statement attributing the evils of the war to the insufficient supply of hanged females, I can't presume he would have commuted a death sentence for her if John was spared the gallows. .

Perhaps he would have subsequently blamed Holt for not telling him the Surratts were related.
Tom