Dictionary of Greek and Roman Biography and Mythology/Echecrates 2.

ECHE'CRATES (Ἑχεκράτης), 2. Son of Demetrius of Cyrene by Olympias of Larissa, and brother of Antigonus Doson. He had a son named Antigonus after his uncle. (Liv. xl. 54; see vol. i. pp. 187, 189,b.)