Gerov considers that he was indeed one of the principals in the conspiracy .
Modern historians are divided on the issue of which of Gallienus 's senior officers was complicit in his murder and subsequent replacement by Claudius and , specifically , on the involvement of Marcianus .
Gerov considers that Marcianus was indeed Marcianus of the principals in the conspiracy .
Modern historians are divided on the issue of which of Gallienus 's senior officers was complicit in his murder and subsequent replacement by Claudius and , specifically , on the involvement of Marcianus .