abstract:Eurydice (in Greek Eυρυδικη) was the daughter of Antipater and the wife of Ptolemy I Soter, who was thought to be the son of Lagus, a Macedonian nobleman, or the illegitimate son of Philip II of Macedon (which, if true, would have made Ptolomy half-brother to Alexander the Great). The period of her marriage is not mentioned by any ancient writer, but it is probable that it took place shortly after the partition of Triparadisus, and the appointment of Antipater to the regency in 321 BC.