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In page Didymeia (sister of Seleucus I Nicator):

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She had married an unnamed Greek nobleman and had two sons: Diodotus and Nicomedes. Diodotus, as a nephew of Seleucus I, would become Seleucid satrap of Bactria and his son, Diodotus I Soter would rebel in 255 BC, forming the rival Diodotid Kingdom (see Seleucid Dynastic Wars).[citation needed]