Variations of famous Viking-era swordsmiths' names

[Victrix]

In Wikipedia on Passau history I found this: ” During the second half of the 5th century, St. Severinus established a monastery here. The site was subject to repeated raids by the Alemanni. In 739, an English monk called Boniface founded the diocese of Passau, which for many years was the largest diocese of the German Kingdom/Holy Roman Empire, covering territory in southern Bavaria and most of what is now Upper and Lower Austria. From the 10th century the bishops of Passau also exercised secular authority as Prince-Bishops in the immediate area around Passau (see Prince-Bishopric of Passau [de]). I have read that swords with blade inscriptions starting and ending with crosses are believed to have been used in ecclesiastical territories which seems to fit Passau as bishopric.

The prevalence of Ulfberht sword finds in Northern Europe may be because the swords were used by viking mercenaries serving in Frankish lands and then brought home with them on their return? The swords would be found in excavated condition because of lingering practices amongst pagan vikings of burying the dead with their swords and sacrificing the weapons of defeated enemies in bogs etc. When the vikings became Christian these practices ceased, and archaelogical finds become more rare.