Ὑδάρνης
Could not find Ὑδάρνου in Logeion dictionaries.
Ὑδάρνου Proper-name noun: masculine genitive singular of Ὑδάρνης
Ὑδάρνης (ὁ) Hydarnès, Perse, Hdt. 3, 70 ; 6, 133, etc. ||
➳ Gén. ion. -έος, Hdt. 7, 65, 83 ; acc. ion. -εα, Hdt. 3, 70 ; 6, 133, etc.