Osiris

Osiris as Lord of the Wine,linked in the prayer to Sothis, his guide.

From the Ancient Egyptian Pyramid Texts:

Utterrance 442The king becomes a star

Truly, this Great One has fallen on his side, He who is in Nedyt was cast down. Your hand is grasped by Re, Your head is raised by the Two Enneads. Lo, he has come as Orion, Lo, Osiris has come as Orion, Lord of wine at the wag-feast. "Good one," said his mother, "Heir," said his father, Conceived of sky, born of dusk. Sky conceived you and Orion, Dusk gave birth to you and Orion. Who lives lives by the gods' command, You shall live! You shall rise with Orion in the eastern sky, You shall set with Orion in the western sky, Your third is Sothis, pure of thrones, She is your guide on sky's good paths, In the Field of Rushes.