No difference in opinions there.
But Jefferson did say, "If there be any among us who would wish to dissolve this Union...let them stand undisturbed as monuments of the safety with which error of opinion may be tolerated where reason is left free to combat it." So it's clear he wouldn't have supported the southern rebellion.
Allright, Non... Tell us what your native language is and I'll translate the quote into something you can understand.
No.