What is the name of Odysseus's maternal grandfather?

Odysseus's maternal grandfather is Autolycus. He is the father of Anticlea, Odysseus's mother, making him the hero's maternal grandfather in the wider Greek mythological genealogy.

Autolycus is famous as a master thief and trickster, and ancient traditions identify him as a son of Hermes. In the Odyssey's account of Odysseus's childhood, Autolycus visits his daughter Anticlea and names her newborn son. The name “Odysseus” is connected in the poem with Autolycus's experience of anger and hostility toward others.

The family tree can be confusing because Odysseus's father is Laertes, whose father is generally identified as Arcesius. Laertes is therefore on Odysseus's paternal line, not his maternal one. Icarius is associated with Penelope's family and is not Odysseus's grandfather.