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DGRBM

Proper name: THYESTES (Θυέστης), a son of Pelops and Hippodameia, was the brother of Atreus and the father of Aegisthus. (Hom. Il. ii. 107; Aeschyl. Agam. 1242; Eurip. Or. 1008; comp. Atreus; Pelops; Agamemnon.) (Wikisource | public domain)
Dictionary of Greek and Roman Biography and Mythology (ed. William Smith 1870), Wikisource | public domain

Lewis Short

(adjective) : Thyestes, ae, m., = Θυέστης
* Son of Pelops and brother of Atreus, who set before him for food the flesh of his own son; he was the father of Aegisthus, Hyg. Fab. 88; Plaut. Rud. 2, 6, 25; Cic. Tusc. 3, 12, 26; Hor. A. P. 91; id. C. 1, 16, 17; Pers. 5, 8.— Hence
* Thyestēus, a, um, , of or belonging to Thyestes, Thyestean: Mycenae,Luc. 1, 544: mensa,Ov. P. 4, 6, 47; id. M. 15, 462: exsecratio,Cic. Pis. 19, 43; cf. preces,Hor. Epod. 5, 86: more furere,Sen. Contr. 1, 1 med.
* Thyestĭădes, ae, m., the (male) offspring of Thyestes; said of Aegisthus, Ov. A. A. 2, 407; Claud. VI. Cons. Hon. 113.
Charlton T. Lewis, Charles Short, A Latin Dictionary
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