Foundation and Roman times
In the winter of 75–74 BC, the area served as a camp for the Roman general Pompeyin the war against Sertorius. He is considered to be the founder of Pompaelo, which became Pamplona, in modern Spanish. Actually it was the chief town of theVascones, and they called it Iruña, 'the city'. Roman Pompaelo was located in the province of Hispania Tarraconensis, on the Ab Asturica Burdigalam, the road from Burdigala (modern Bordeaux) to Asturica (modern Astorga); it was a civitas stipendiaria in the jurisdiction of the conventus of Caesaraugusta (modern Zaragoza).
Early Middle Ages
During the Germanic invasions of 409 and later as a result of Rechiar´s ravaging, Pamplona went through much disruption and destruction, starting a cycle of general decline along with other towns across the Basque territory but managing to keep some sort of urban life. During the Visigothic period (fifth to eighth centuries), Pamplona alternated between self-rule, Visigoth domination or Frankish suzerainty in the Duchy of Vasconia (Councils of Toledo unattended by several Pamplonese bishops between 589 and 684). In the years 466 to 472, Pamplona was conquered by the Visigoth count Gauteric, but they seemed to abandon the restless position soon, struggling as the Visigoth Kingdom was to survive and rearrange its lands after their defeats in Gaul. During the beginning of the 6th century, Pamplona probably stuck to an unstable self-rule, but in 541 Pamplona along with other northern Iberian cities was raided by the Franks.
Circa 581, the Visigoth king Liuvigild overcame the Basques, seized Pamplona and founded in Vasconia the town of Victoriacum. Despite the legend citing Saint Fermin as the first bishop of Pamplona and his baptising of 40,000 pagan inhabitants in just three days, first reliable accounts of a bishop date from 589, when bishop Liliolus attended