Helena of Adiabene was a queen mother of the Parthian vassal state of Adiabene. With her husband and brother Monobaz I, she was the mother of Izates II and Monobaz II. Helena became a convert to Judaism about the year 30 CE. According to Josephus, Helena was the daughter of King Izates. Moses of Chorene makes her the chief wife of Abgar V, king of Edessa.
Sarcophagus of Helena, Israel Museum
Tombs of the Kings
Sarcophagus of Helena of Adiabene
The Sarcophagus in the Louvre
Abgar V, called Ukkāmā, was the King of Osroene with his capital at Edessa.
Icon of Abgar holding the mandylion, the image of Christ (encaustic, 10th century, Saint Catherine's Monastery, Mount Sinai).
Abgar V on an Armenian banknote
Fresco from Varaga St. Gevorg church chapel showing king Abgar with image of Christ