His full name is given as Algernon Sidney Cabell by family researchers at this site.
http://rootsweb.ancestry.com/

His Arkansas marriage record is located at this site (See S. A. Cabell & Mary A. Carroll).
http://www.argenweb.net/franklin/Marriages/marriage1.htm

His burial site is noted here.
http://www.findagrave.com/cgi-bin/fg.cgi?page=gr&GSln=cabell&GSbyrel=in&GSdyrel=in&GSob=n&GRid=22961270&

Hope this helps.