Sometimes, in a memoir, the narrator is telling their story to their younger self. It's a way of reflecting on their past, making peace with their mistakes, and giving advice to the person they used to be. They are using the narrative as a form of self - exploration and self - therapy.
It could be to the reader. Often, narrators in novels or short stories are implicitly addressing the reader, sharing their tale as if we are the confidants.
It could be to a specific character within the story or to an imagined audience. It really depends on the context and the nature of the narrative.
Odysseus is telling his story to the Phaeacians. They are a kind and hospitable people who offer him shelter and listen to his long and arduous journey.
Odysseus shares his adventures with a group of people in the court of the Phaeacians. King Alcinous and the other members of the court are the main recipients of his tales.
Odysseus primarily shares his tale with the people of Phaeacia. They are receptive listeners who are intrigued by his adventures and misfortunes.
He is telling his story to a wedding - guest.
One possibility is that he could be telling his story to a priest. In the context of seeking absolution, Montresor might be confessing his dark deed. Priests are often the recipients of confessions, and Montresor, burdened by his conscience perhaps, could be unburdening himself to a man of God.
The ancient mariner shares his tale with a random person he meets at a wedding. This person becomes the listener as the mariner recounts his adventures at sea.
In the Odyssey, Odysseus shares his adventures with the people of Phaeacia. The main individuals he tells his story to are the king and queen of Phaeacia, who are receptive and interested in his tales.
It could be to a close friend or confidant, someone he trusts to listen and understand.