Erilaz

Erilaz or Erilaʀ is a Migration period Proto-Norse word attested on various Elder Futhark inscriptions, which has often been interpreted to mean "magician" or "rune master",[1] i.e., one who is capable of writing runes to magical effect.

However, as Mees (2003) has shown, the word is an ablaut variant of earl, and is also thought to be linguistically related to the name of the tribe of the Heruli, so it is probably merely an old Germanic military title (see etymology below).

This word is likeliest the Proto-Germanic ancestor of Anglo-Saxon eorl (Modern English earl) and its relatives, meaning "man, warrior, noble".

[2] Historical instances: The Lindholm "amulet" (DR 261 $U) is a bone piece found in Skåne, dated to the 2nd to 4th centuries.

The Kragehul I (DR 196 U) spear-shaft found in Funen[3] that bears the inscription: Which is interpreted as "I, the earl of Āsugīsal, am called Muha," followed by some sort of battle cry or chant ("gagaga").