ウァレンティニアヌス2世
Although the ancient historians were unanimous in stating Arbogast's claimed innocence about the death of Valentinian II, some of them could not agree on whether or not his claim was true. Historians such as Zosimus, Philostorgius, Socrates Scholasticus, and Paulus Orosius, all believed Valentinian II was murdered, one way or the other, by Arbogast. On the other hand, more contemporary scholars such as Edward Gibbon, who thought the death of Valentinian II was a plotted conspiracy so Arbogast could remain at the seat of command in the West through another puppet emperor, while John Frederick Matthews, and Brian Croke argue that the death of Valentinian II was a result of suicide. Croke, for example, argues that given the period of four months time between the death of Valentinian II and the promotion of Eugenius was sufficient enough for him to appear innocent, implying that if Arbogast had plotted an assassination, Arbogast would have instilled a replacement for Valentinian II almost immediately.