A student paper on the Elpenor Pelike at the MFA in Boston drew my attention to the following passage.
Servius ad Aen. 6.107
“For this reason the place is named without joy since, as people claim, it would not have been there but for necromancy or spellcraft. For, Aeneas completed these sacred rites when Misenus was killed and Ulysses did it with the death of Elpenor. This very scene Homer himself presented falsely from the detail of its location which he specifies along with the length of time of the journey. For he claims that Ulysses sailed for one night and came to the place where he completed these sacrifices. For this reason it is abundantly clear that he doesn’t mean the ocean but Campania.”
sine gaudio autem ideo ille dicitur locus, quod necromantia vel sciomantia, ut dicunt, non nisi ibi poterat fieri: quae sine hominis occisione non fiebant; nam et Aeneas illic occiso Miseno sacra ista conplevit et Vlixes occiso Elpenore. quamquam fingatur in extrema Oceani parte Vlixes fuisse: quod et ipse Homerus falsum esse ostendit ex qualitate locorum, quae commemorat, et ex tempore navigationis; dicit enim eum a Circe unam noctem navigasse et ad locum venisse, in quo haec sacra perfecit: quod de Oceano non procedit, de Campania manifestissimum est.
The relevant passages from the Odyssey don’t give any hint that Elpenor was intentionally killed for black magic. When Odysseus actually does summon the dead, now that gets a little dark.
“I could not even lead my companions unharmed from there.
The youngest of my companions was a certain Elpênor,
He was neither especially brave in battle or composed in his thoughts.
He separated himself from the companions in Kirkê’s holy home
Because he needed some air; then he fell asleep because he was drunk.
When he heard the noise and trouble of our companions moving out,
He got up immediately and it completely escaped his thoughts
To climb down again by the long ladder—
So he fell straight from the roof and his neck
Shattered along his spine; then his spirit flew down to Hades.”
οὐδὲ μὲν οὐδ’ ἔνθεν περ ἀπήμονας ἦγον ἑταίρους.
᾿Ελπήνωρ δέ τις ἔσκε νεώτατος, οὔτε τι λίην
ἄλκιμος ἐν πολέμῳ οὔτε φρεσὶν ᾗσιν ἀρηρώς,
ὅς μοι ἄνευθ’ ἑτάρων ἱεροῖσ’ ἐν δώμασι Κίρκης,
ψύχεος ἱμείρων, κατελέξατο οἰνοβαρείων·
κινυμένων δ’ ἑτάρων ὅμαδον καὶ δοῦπον ἀκούσας
ἐξαπίνης ἀνόρουσε καὶ ἐκλάθετο φρεσὶν ᾗσιν
ἄψορρον καταβῆναι ἰὼν ἐς κλίμακα μακρήν,
ἀλλὰ καταντικρὺ τέγεος πέσεν· ἐκ δέ οἱ αὐχὴν
ἀστραγάλων ἐάγη, ψυχὴ δ’ ῎Αϊδόσδε κατῆλθεν.
Elpênor appears twice more in the epic: 11.51–80 (Odysseus meets Elpênor’s ghost when he summons the dead); 12.9-15 (Odysseus buries Elpênor).
Nekuomanteia, glossed by Hesychius as nekromanteia (i.e. “necromancy”) is an alternate name for the Nekyuia, the parade of the dead in book 11 of the Odyssey. From the Greek Anthology: ᾿Εν τῷ Η ἡ τοῦ ᾿Οδυσσέως νεκυομαντεία· (3.8); Scholia to the Odyssey, Hypotheses: Λ. Νεκυομαντεία, ἢ, Νεκυία. Cf. Eustathius, Comm. Ad Od. 1.396.10