Pertinax (126 - 193). Pertinax was a Roman soldier and politician who ruled as Roman emperor for the first three months of 193. He succeeded Commodus to become the first emperor during the tumultuous Year of the Five Emperors. Born the son of a freed slave, Pertinax became an officer in the army. He fought in the Roman-Parthian War of 161-166, where his success led him to be promoted to higher-ranking positions in both the military and political spheres. He achieved the rank of provincial governor and urban prefect. He was a member of the Roman Senate, serving at the same time as the historian Cassius Dio. Following the death of Commodus, Pertinax was acclaimed emperor. He attempted to institute several reform measures, although the short length of his time as emperor prevented the success of those attempts. One of those reforms, the restoration of discipline among the Praetorian Guard, led to conflict that eventually culminated in Pertinax's assassination by the Guard. Pertinax would be deified by the emperor Septimius Severus. His historical reputation has largely been a positive one, in line with the assessment of Dio. His career before becoming emperor is documented in the Historia Augusta and confirmed in many places by existing inscriptions. He was born in Alba Pompeia in Italy, the son of freedman Helvius Successus. Pertinax through the help of patronage was commissioned an officer in a cohort. In the Parthian war that followed, he was able to distinguish himself, which resulted in a string of promotions, and after postings in Britain and along the Danube, he served as a procurator in Dacia. He suffered a setback as a victim of court intrigues during the reign of Marcus Aurelius, but shortly afterwards he was recalled to assist Claudius Pompeianus in the Marcomannic Wars. In 175, he received the honor of a suffect consulship and until 185, Pertinax was governor of the provinces of Upper and Lower Moesia, Dacia, Syria and finally governor of Britain. During the 180s, Pertinax took a pivotal role in the Roman Senate until the praetorian prefect Sextus Tigidius Perennis forced him out of public life. He was recalled after three years to Britain, where the Roman army was in a state of mutiny. He tried to quell the unruly soldiers there but one legion attacked his bodyguard, leaving Pertinax for dead. When he was forced to resign in 187, the reason given was that the legions had grown hostile to him because of his harsh rule. He served as proconsul of Africa from 188-189, and followed this term of service with the urban prefecture of Rome, and a second consulship as ordinarius with the emperor Commodus as his colleague. When Commodus' behaviour became increasingly erratic throughout the early 190s, a conspiracy led to his assassination on 31 December 192. The plot was carried out by the Praetorian prefect Quintus Aemilius Laetus, Commodus' mistress Marcia, and his chamberlain Eclectus. After the murder had been carried out, Pertinax, who was serving as urban prefect at this time, was hurried to the Praetorian Camp and proclaimed emperor the following morning. His short reign was an uneasy one. He attempted to emulate the restrained practices of Marcus Aurelius, and made an effort to reform the alimenta but he faced antagonism from many quarters. Ancient writers detail how the Praetorian Guard expected a generous donativum on his ascension, and when they were disappointed, agitated until he produced the money, selling off Commodus' property, including the concubines and youths Commodus kept for his sexual pleasures. He reformed the Roman currency dramatically, increasing the silver purity of the denarius from 74% to 87%-the actual silver weight increasing from 2.22 grams to 2.75 grams. Pertinax attempted to impose stricter military discipline upon the pampered Praetorians. In early March he narrowly averted one conspiracy by a group to replace him with the consul Quintus Sosius Falco while he was in Ostia inspecting the arrangements for grain shipments. The plot was betrayed; Falco himself was pardoned but several of the officers behind the coup were executed. On 28 March 193, Pertinax was at his palace when, according to the Historia Augusta, a contingent of some three hundred soldiers of the Praetorian Guard rushed the gates. Ancient sources suggest that they had received only half their promised pay. Neither the guards on duty nor the palace officials chose to resist them. Pertinax sent Laetus to meet them, but he chose to side with the insurgents instead and deserted the emperor. Although advised to flee, he then attempted to reason with them, and was almost successful before being struck down by one of the soldiers.