Didius Julianus
It has been traditionally held that Senecio Albinus was the biological son of Nummius Albinus, a half brother of the Emperor Didius Julianus, who was probably condemned to death after his overthrow by Septimius Severus in 193. At some point, Senecio Albinus was adopted by Marcus Umbrius Primus, a member of the "Umbrii Primi" from Compsa (today Conza della Campania), which had very close ties to Beneventum.