Tiberius Julius Rhescuporis III Philocaesar Philoromaios Eusebes, also known as Rhescuporis III (flourished 3rd century - died 227) was a prince and Roman Client King of the Bosporan Kingdom.

Rhescuporis III was the son and heir of Bosporan King Rhescuporis II by an unnamed woman and was of Greek, Iranian and Roman ancestry. In 210/211 the paternal grandfather of Rhescuporis III, King Sauromates II died, Rhescuporis III succeeded with his father Rhescuporis II. Rhescuporis III co-ruled with his father as Bosporan Kings until their deaths in 227. His royal title on coins is in Greek: ΒΑΣΙΛΕΩΣ ΡΗΣΚΟΥΠΟΡΙΔΟΣ or King Rhescuporis.

In 221, in the seaport city located in the Black Sea called Amastris (modern Amasra) there was an honorific inscription dedicated to Rhescuporis III. The inscription describes Rhescuporis III as: ”King of the Bosporus and the surrounding ethne [peoples], philoromaios [friend of the Romans], and philhellen [friend of the Hellenes].”

Source: http://en.wikipedia.org/wiki/Tiberius_Julius_Rhescuporis_III