- Tony Honoré
Marcellus Ulpius, a lawyer of the mid-2nd cent. ce, whose family, probably from *Asia Minor, had become Roman citizens under Trajan, and was himself of equestrian rank (see equites). He taught and practised law in Rome and advised *Antoninus Pius and Marcus *Aurelius as a member of their respective councils (see consilium principis). He wrote at least five books (libri): De officio consulis (‘On the Duties of the Consul’), a book of Responsa (‘Consultative Opinions’), and 31 of Digesta (‘Ordered Abstracts’), his most important work, which belongs to the 160s ce. It constitutes a refined analysis of material from various sources. Q. *Cervidius Scaevola and *Ulpian annotated it. A writer of independent mind, he published notes on *Julianus'Digesta criticizing some of Julianus' free-wheeling innovations. Justinian's compilers excerpted over 120 passages from his work (see justinian's codification).