In Greek mythology, Alcathous (Ancient Greek Ἀλκάθοος) son of Aesyetes is the Trojan captain who marries Hippodameia, eldest daughter of Anchises, and leads a company with Paris and Agenor against the Achaean wall. Poseidon once fostered Aeneas in Alcathous' halls; Idomeneus of Crete slays him in Iliad Book 13. Distinct from Alcathous son of Pelops and other namesakes.
Adapted from Wikipedia, "Alcathous" · CC BY-SA 4.0
I.Anchises' son-in-law
In the assault on the ships Paris, Alcathous, and Agenor lead the second Trojan company (Iliad 12.93). Alcathous had wedded Hippodameia, who excelled her age-mates in beauty and handiwork; some scholia make Cleomestra daughter of Tros his mother, linking him to Antenor and Assaracus.
When Idomeneus kills him, Poseidon rouses Aeneas — whom Alcathous had reared as a child — to defend the body; Cretan king and Trojan prince clash with long spears over the fallen captain. Quintus and Virgil know further Alcathous namesakes at Troy and in Italy; this notice is Homer's Aesyetes-son alone.
II.Homonym care
The atlas id alcathous-trojan is Aesyetes' Trojan son-in-law of Anchises alone. Distinct from Alcathous son of Pelops (Megarian lion-slayer), the Calydonian Porthaonid, and companions of Aeneas in Italy.