Well, the Getai situation is difficult to reconstruct. The Ordes were a leading tribe among the Getai, and so its generally an Ordes that will be king of the Getai faction, though there were Karp and Kostobok and other tribal kings at different times. Zalmodegikos seems to have been the king who took over for the Getai after the death of Dromikaites, probably at the hands of the Celts. He could have been a son of Dromikaites, but we have no reason to make that argument, so we figure on him being a leading noble, and construct his connections to later-appearing Getic rulers via marriage, rather than sonship.