Diognetus
(Διόγνητος).
1. Admiral of Antiochus the Great, was commissioned, in B. C. 222, to convey to Seleuceia, or the Tigris, Laodice. the intended wife of Antiochus and daughter of Mithridates IV., king of Pontus. (Plb. 5.43; comp. Clinton, F. H. iii. pp. 315, 424.) He commanded the fleet of Antiochus in his war with Ptolemy IV. (Philopator) for the possession of Coele-Syria, and did him good and effectual service. (Plb. 5.59 60, 62, 68-70.)
2. A general of the Erythrean forces which aided Miletus in a war with the Naxians. Being entrusted with the command of a fort for the annoyance of Naxos, he fell in love with Polycrita, a Naxian prisoner, and married her. Through her means the Naxians became masters of the fort in question. At the capture of it she saved her husband's life, but died herself of joy at the honours heaped on her by her countrymen. There are other editions of the story, varying slightly in the details. (Plut. de Mul. Virt. s. v. Πολυκρίτη; Polyaen. 8.36 ; Parthen. Erot. 9.)
3. A man who measured distances in his marches for Alexander the Great, and wrote a work on the subject. He is mentioned by Pliny in conjunction with Baeton. (Plin. Nat. 6.17.) [E.E]
artists.
1. An engineer, who aided the Rhodians in their resistance to Demetrius Poliorcetes. (Vitr. 10.21, or 16.3, Schneider.)
2. A painter, who instructed the emperor M. Antoninus in his art. (Capitolin. Anton. 4, and Salmasius's note.) [P.S]
- Olympic victor: Paus. 10.5.13