[5] ylfingr (m.) ‘one of the Ylfingar’: The Ylfingar belonged to a legendary royal family (SnE 1998, I, 103), and the OE Wylfingas/Wilfingas in Beowulf were members of a Germanic tribe probably occupying a territory south of the Baltic (see Beowulf 2008, 473). In poetry the word is never used in the sg. form as a common noun.