Heruli again

Sturtevant:
A Comparative Grammmar of the Hittite Language, p. 111
"
Formative -l
199. The use of /l/ in pronominal inflection is characteristic of
the Anatolian languages and also of Etruscan. In Hittite it marks
the genitive of the personal pronouns (...) and of the adjective
pronouns (...) ... Such an adjective as Lat. 'eri:lis' (in 'eri:lis
filius' "master's son" may preserve a trace of this formative -l.
"
And Latin 'erus' "master" (Hittite 'is^-h_a-(a-)as^' "master", PIE
*esH- ?)

The semantics fits nicely with Runic 'erilaz'. But I wonder what the
archaic -l in is about in this word?


Torsten