Wikipedia
Romanus (Latin for "Roman"), hellenized as Romanos (Ῥωμανός) was a Roman cognomen and may refer to:
Romanus (died 596 or 597) was Exarch of Ravenna (589-596/7).
In 589 he became Exarch in place of the discredited Smaragdus. In his first year Romanus recovered the cities of Modena, Reggio, Parma, Piacenza, Altinum, and Mantua from the Lombards.
In 592 Pope Gregory I appealed to the Exarch for help in assisting Naples, then under Lombard attack, but Romanus thought it more prudent to remain in central Italy. The Pope was forced to make peace with the Duchy of Spoleto to save Naples. Shortly afterwards, the Lombards occupied Perugia, causing Romanus to send an army to retake Umbria. The Lombard King Agilulf, noticing this, crossed into central Italy and even threatened Rome. Frustrated with the lack of support he received from the Exarch (R.A. Markus describes him as a "large thorn in Gregory's side"), the Pope tried to circumvent Romanus' authority by appealing to the Byzantine Emperor Maurice in 595, but this proved fruitless, given the fact that Maurice saw more emphasis in maintaining a link between Ravenna and the Balkans, where he kept the Avars and Slavs at bay.
Romanus died soon after this, and was succeeded by Callinicus, who proved to be more conciliatory to Pope Gregory.
Romanus (died before 627) was the second bishop of Rochester and presumably was a member of the Gregorian mission sent to Kent to Christianize the Anglo-Saxons from their native Anglo-Saxon paganism. Romanus was consecrated bishop around 624 and died before 627 by drowning. Little is known of his life beyond these facts.
Romanus was a Roman usurper in the West Roman Empire who unsuccessfully rebelled against the Emperor Anthemius in 470 before being executed at Rome.
Romanus, Bishop of Poznań was a Bishop of Poznan, Poland.
He was Bishop from 1012 AD to 1030 AD and is known from the Chronicles of Krakow and he died 1030.