I've got a Robert Walker married to my 2nd great grandaunt Hannah Springer. http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=DESC&...

I haven't run into an Alexander.

I see that James is buried in Red Clay Creek Presbyterian Church Cemetery. http://www.findagrave.com/cgi-bin/fg.cgi?page=gr&GRid=91...

Robert and Hannah are buried there also. http://www.findagrave.com/cgi-bin/fg.cgi?page=gr&GRid=91...

Perhaps, James is Robert's father?