Idrieus, or Hidrieus was a ruler of Caria as a Satrap under the Achaemenid Empire. Alongside his sister and wife Ada, he enjoyed the status of king or dynast by virtue of the powerful position he inherited from his predecessors of the House of Hecatomnus.
Coinage of Idrieus. Obv: Head of Apollo wearing laurel wreath, drapery at neck. Rev: legend ΙΔΡΙΕΩΣ ("IDRIEOS"), Zeus Labraundos standing. Circa 351/0 to 344/3 BCE.
Achaemenid coinage of Caria during the reign of Idrieus. Circa 350-341 BC.
Tomb of Idrieus in Labraunda (present day Turkey)
Ada of Caria was a member of the House of Hecatomnus and ruler of Caria during the mid-4th century BC, first as Persian Satrap and later as Queen under the auspices of Alexander III of Macedon.
Portrait of a young woman from the Mausoleum at Halicarnassus, sometimes identified as Ada. British Museum.
Agora of Alinda, Ada's Stronghold.
The siege and capture of Halicarnassus under Alexander the Great
Purported skeleton of Ada, Bodrum Museum of Underwater Archaeology