Virtually no information survives concerning the acts of Arnoald prior to his becoming Bishop of Metz or during his occupation of the episcopal seat. From
Paul the Deacon we learn that he was Roman and of senatorial extraction suggesting that he came from one of the families in southern Gaul whose members had held senatorial rank during the empire. The
Commemoratio Genealogiae Domni Karoli Glorissimi Imperatoris, clearly incorrect in some respects (see below), suggests strongly that Arnoald was one of the Ferreoli, a family dating from the 4th century who were based in the Midi but appear to have switched their loyalties from the
Visigothic Kingdom to the Frankish Kingdom of
Austrasia with its capital at Metz during the two decades following the
Battle of Vouillé in 507. Modern arguments have been made that this relationship was invented by contemporaries to give the Carolingians a Roman pedigree. However this is unlikely to have been the case inasmuch as (a) the Ferreoli, though significant, were far from the most prominent senatorial family in Gaul and (b) it would have been too easy for the Carolingians to obtain whatever Roman bloodline by marrying into remnants of those families. Still the interest taken by the Austrasians in the Ferreoli is enigmatic and significant and may have to do with their potential use in a conquest of Visigothic
Septimania. Several members of the family were elevated to the rank of Patrician (senior Roman official) of Provence during the 6th century. Arnoald's acquisition of the bishopric of Metz is unsurprising inasmuch as his uncle Agilulf had held it. The reason Agilulf was granted the position is more obscure. There do not appear to be any predecessors of this family in the bishopric of Metz which prior to 590 was not important enough to warrant a single mention from
Gregory of Tours. Prior to Agilulf, the most powerful bishops in the Austrasian kingdom were
Egidius of Rheims and Gregory of Tours. Egidius was convicted of treason in 590 and the rise of the Bishops of Metz from that time certainly is in part due to those events. Even after these events, Metz cannot truly be said to have become the most powerful bishopric until the time of
Arnulf. It is of some interest that the name of the diplomatically adept deacon of Gregory of Tours in 590 was also an Agilulf. == Relation to St. Arnulf of Metz ==