Libius Severus

Libius Severus (died November 14, 465), sometimes enumerated as Severus III, was Western Roman emperor from November 19, 461 until his death. A native of Lucania, Severus was the fourth of the so-called "Shadow Emperors" who followed the deposition of the Valentinianic dynasty in 455. He ruled for just under four years, attaining the throne after his predecessor, Majorian, was overthrown by his magister militum, Ricimer. Severus was the first of a series of emperors who were highly dependent on the general, and it is often presumed that Ricimer held most of the de facto power during Severus's reign.

Severus's reign was marked by diplomatic tension and an erosion of Rome's control over the non-Italian provinces. Diplomatically, Severus failed to secure the eastern emperor Leo's recognition, and the alliance Majorian had made with Vandal king Gaiseric crumbled as the Vandals raided Italy. In Gaul and Dalmatia officials loyal to Majorian refused to submit to Severus's rule, and Northern Italy was invaded by the Alans.

Severus remains an extremely obscure figure. The ancient sources are almost completely mute on his life and character. Because of the size of Ricimer's influence, no single imperial action can be definitively attributed to Severus; thus the extent of Ricimer's control over imperial affairs during the reign of Severus remains a point of contention among scholars.