Plutarch, Demetrius
Bernadotte Perrin, Ed.

51. Demetrius, however, finding himself in this plight, sent word to his son and the friends and commanders who were at Athens and Corinth, bidding them put no trust in letters or seal purporting to be his, but to treat him as dead, and to preserve for Antigonus his cities and the rest of his power. [2] When Antigonus learned of his father's capture, he was deeply distressed, put on mourning apparel, and wrote to the other kings and especially to Seleucus himself, supplicating him, and offering to surrender to him whatever was left of his own and his father's possessions, and above everything else volunteering to be a hostage himself for his father. Many cities also and many rulers joined in these supplications. [3] But Lysimachus did not; he sent to Seleucus the promise of a large sum of money if he killed Demetrius. But Seleucus, who had always had a feeling of aversion for Lysimachus, all the more for this proposal thought him abominable and barbarous, and continued to keep Demetrius under watch and ward for Antiochus his son and Stratonicé, that the favour of his release might come from them.