Marcus - usurper - died in 407.
Marcellus - usurper - died in 366.
Bonosus - usurper - died in 281.
Celsus - usurper - died in 265.
Censorinus - usurper - died in 269.
Constantine Doukas - usurper - died in 913.
Constans II - usurper - died in 411.
Septimius - Roman emperor usurper - died in 271.
Conan the Usurper was created in 1967.
Steve Marcus died in 2005.
Marcus Marsh died in 1983.
Marcus Barlow died in 1955.
Marcus Nicholls died in 1972.