There are at least 9 acts using the name Dead:
These are photos from concerts where Dead played, so they may be of other bands that played the concert as well.
Party.San Metal Open Air XI Aug 11 - 13, 2005 99438 Bad Berka, Germany Uploaded by Laza
Party.San Metal Open Air XI Aug 11 - 13, 2005 99438 Bad Berka, Germany Uploaded by Grindcrusher