king of Ithaca at the time of the Trojan War, son of Laertes and Anticleia, from Greek Odysseus, a name of unknown origin. Epic poets connected it with odyssasthai "to be angry, be grieved, grumble," but this now is regarded as folk-etymology. Beekes writes that "the name is typically Pre-Greek ... on account of the many variants." Among them are several by-forms with -l-: Olysseus, Olytteus, Oulixeus, etc., hence Latin Ulysses,Ulixes.

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Definitions of Odysseus from WordNet

Odysseus (n.)
(Greek mythology) a famous mythical Greek hero; his return to Ithaca after the siege of Troy was described in the Odyssey;