of the Ulpian family, was the senator upon whose motion, according to Capitolinus, Balbinus and Maximus were nominated joint emperors. Upon their elevation he was appointed Praefectus Urbi. (Capitolin. Max. et Balb. 2, 4.)
[W.R]A Dictionary of Greek and Roman biography and mythology
Smith, William
A Dictionary of Greek and Roman biography and mythology. William Smith, LLD, ed. 1890