Wulf
Wulf (Common Germanic wulfaz "wolf") was one of the most prolific elements in early Germanic names.
It could figure as the first element in dithematic names, as in Wulfstan, but especially as second element, in the form -ulf, -olf as in
Cynewulf, Rudolph, Adolph etc., it was extremely common. Förstemann explains this as originally motivated by the wolf as an animal sacred to Wodanaz, but notes that the large number of names indicates that the element had become a meaningless suffix of male names at an early time (and was therefore not anymore considered a "pagan" element at the time of Christianisation. By the tenth century, there was clearly no "pagan" connotation left with such names, and saints and bishops bore names such as Wulfstan or Wolfgang).
Förstemann counts 381 names in -ulf, -olf, among which only four are feminine.
Hypocorisms
The numerous names in -wulf, -ulf, -olf gave rise to hypocorisms from an early time, which were later also treated as given names in their own right. Among such names are the Anglo-Saxon Offa, Yffe, Uffa, Wuffa. Corresponding continental forms are Uffo, Uffi. The name of the ancient tribe of the Ubii may also be related.