Aelius Marcianus was a Roman

Ancient Rome

Ancient Rome was a thriving civilization that grew on the Italian Peninsula as early as the 8th century BC. Located along the Mediterranean Sea and centered on the city of Rome, it expanded to one of the largest empires in the ancient world....

 jurist

Jurist

A jurist or jurisconsult is a professional who studies, develops, applies, or otherwise deals with the law. The term is widely used in American English, but in the United Kingdom and many Commonwealth countries it has only historical and specialist usage...

 who wrote after the death of Septimius Severus

Septimius Severus

Septimius Severus , also known as Severus, was Roman Emperor from 193 to 211. Severus was born in Leptis Magna in the province of Africa. As a young man he advanced through the customary succession of offices under the reigns of Marcus Aurelius and Commodus. Severus seized power after the death of...

, whom he calls Divus in his excerpts from the Pandects

Pandects

The Digest, also known as the Pandects , is a name given to a compendium or digest of Roman law compiled by order of the emperor Justinian I in the 6th century .The Digest was one part of the Corpus Juris Civilis, the body of civil law issued under Justinian I...

. Other passages in the same source show that he was then writing under Antoninus Caracalla

Caracalla

Caracalla , was Roman emperor from 198 to 217. The eldest son of Septimius Severus, he ruled jointly with his younger brother Geta until he murdered the latter in 211...

, the son and successor of Severus. It also appears from his Institutiones that he survived Caracalla. It is therefore probable that he also wrote under Alexander Severus

Alexander Severus

Severus Alexander was Roman Emperor from 222 to 235. Alexander was the last emperor of the Severan dynasty. He succeeded his cousin Elagabalus upon the latter's assassination in 222, and was ultimately assassinated himself, marking the epoch event for the Crisis of the Third Century — nearly fifty...

, whose reign commenced 222 AD. Caracalla died in 217 AD. Another Aelius Marcianus is cited in the Pandects

Pandects

The Digest, also known as the Pandects , is a name given to a compendium or digest of Roman law compiled by order of the emperor Justinian I in the 6th century .The Digest was one part of the Corpus Juris Civilis, the body of civil law issued under Justinian I...

, who was proconsul

Proconsul

A proconsul was a governor of a province in the Roman Republic appointed for one year by the senate. In modern usage, the title has been used for a person from one country ruling another country or bluntly interfering in another country's internal affairs.-Ancient Rome:In the Roman Republic, a...

 of Hispania Baetica

Hispania Baetica

Hispania Baetica was one of three Imperial Roman provinces in Hispania, . Hispania Baetica was bordered to the west by Lusitania, and to the northeast by Hispania Tarraconensis. Baetica was part of Al-Andalus under the Moors in the 8th century and approximately corresponds to modern Andalucia...

 in the time of Antoninus Pius

Antoninus Pius

Antoninus Pius , also known as Antoninus, was Roman Emperor from 138 to 161. He was a member of the Nerva-Antonine dynasty and the Aurelii. He did not possess the sobriquet "Pius" until after his accession to the throne...

.

The works of Marcianus, from which there are excerpts in the Pandects

Pandects

The Digest, also known as the Pandects , is a name given to a compendium or digest of Roman law compiled by order of the emperor Justinian I in the 6th century .The Digest was one part of the Corpus Juris Civilis, the body of civil law issued under Justinian I...

, are:

• Sixteen books of Institutiones, from which there are excerpts in the Pandects: this work was also used for the compilation of Justinian's Institutions;
• Two books on Publica Judicia.
• Two books on Appellationes.
• Five books titled Regularia.
• A single book on Delatores.
• A single book on the Hypothecaria Formula.
• A single book ad Sct. Turpillianum.

He also wrote notes on Aemilius Papinianus

Aemilius Papinianus

Aemilius Papinianus , also known as Papinian, was a celebrated Roman jurist, magister libellorum and, after the death of Gaius Fulvius Plautianus in 205, praetorian prefect.-Life:...

. Marcianus is cited by Ulpian

Ulpian

Gnaeus Domitius Annius Ulpianus , anglicized as Ulpian, was a Roman jurist of Tyrian ancestry.-Biography:The exact time and place of his birth are unknown, but the period of his literary activity was between AD 211 and 222...

us and Paulus

Paul (jurist)

Julius Paulus Prudentissimus was one of the most influential and distinguished Roman jurists. He was also a praetorian prefect under the Roman Emperor Alexander Severus.-Life:...

. There are 275 excerpts from Marcianus in the Pandects

Pandects

The Digest, also known as the Pandects , is a name given to a compendium or digest of Roman law compiled by order of the emperor Justinian I in the 6th century .The Digest was one part of the Corpus Juris Civilis, the body of civil law issued under Justinian I...

.

There are rescript

Rescript

A rescript is a document that is issued not on the initiative of the author, but in response to a specific demand made by its addressee...

s addressed by Alexander Severus

Alexander Severus

Severus Alexander was Roman Emperor from 222 to 235. Alexander was the last emperor of the Severan dynasty. He succeeded his cousin Elagabalus upon the latter's assassination in 222, and was ultimately assassinated himself, marking the epoch event for the Crisis of the Third Century — nearly fifty...

 to "A. Marcianus" and to "A. Martianus", which may be the same name, and one by Gordian

Gordian

Gordian may refer to:* Saint Gordianus, see article Gordianus and Epimachus*Gordian I, Roman emperor*Gordian II, Roman emperor, son of Gordian I*Gordian III, Roman emperor, grandson of Gordian I...

to "A. Martianus" in the year 239; but this may be a different person from the jurist whose writings are excerpted in the Pandects.