Thomas Jackson owned no slaves, Robert E Lee manumitted his wife's slaves. Jackson was looked askance upon and regarded to be eccentric in Lexington because he conducted Sunday school classes for black children. Thomas Jackson owned as many as 11 or 13 slaves at any given time, and was a slave owner the day he died. And while it is true that Jackson ran a Sunday school for blacks, free and slave, it was not that unusual. Southern churches saw it as one of their responsibilities to educate blacks on scripture.
I stand corrected, you are right and I was wrong, Jackson did in fact own slaves. I stand by my observation, however, that to teach that Sunday school class was to court social opprobrium.
Thank you for the correction.