[citation needed] Some think the name may be a corruption of the later part of the Latin name Ma-ximinus, as there are late Classic records that various individuals with this name were becoming very active as officials and residents in upper Hispania near the Pyrenees and Tarraconensis during the last century of the Western Roman Empire, and perhaps into the period of transition from imperial province to independent Kingdom during Visigothic rule.
A "Seguin" was attested in Frankish chronicles when referring to the Count of Bordeaux and Duke of Vasconia (778, 814 and 816).
He may have been a local Basque whose family later fled south over the Pyrenees and helped Enneco Arista take over in Pamplona.
[citation needed] Arab sources in Al-Andalus report in 778 a "Jimeno, the strong", calling him "Mothmin al-Akra".
This person was possibly related to others near Pamplona in local opposition to both the invading Franks under Charlemagne and the new ruler of the Islamic Iberian realm, Abd al-Rahman I.