Hystaspa
Hystaspa was a prominent satrap of the Achaemenid Empire, ruling the province of Parthia. He was the son of Arsames and a member of the Achaemenid dynasty. Hystaspa is primarily known for his role during the reign of his son, Darius I. Historical accounts suggest he may have been a grandfather to Xerxes I, although this is debated among scholars. Hystaspa is mentioned in various inscriptions and historical texts, including those related to the establishment of the Achaemenid Empire. His administrative capabilities and loyalty to the Persian crown are generally acknowledged. Further details about his personal life and specific achievements are limited in surviving historical records. The exact timeline of his rule and death is not precisely known, but his influence is recognized through his lineage and his son's ascent to the throne.