The online marriage transcriptions have her as Nancy Bass. William's middle initial "T" is probably a transcription error of "P".
http://msgw.org/marriage/http://wilkinson.msghn.org/marriages_ha.htmlHenly, William T...Bass, Nancy...18 Sep 1848...Wilkinson Co, Ms
Since there appears to be a marriage record for her in Wilkinson Co, Ms, you might see if you can get a copy from the Chancery Clerk's office. Someone may have signed for her.
No relation