Thersanon
In Greek mythology, Thersanon or Thersanor is one of the Argonauts. Born in the island of Andros, Thersanon was the son of the sun god Helios by a woman named Leucothoe; he joined Jason and the other Argonauts in the quest for the golden fleece, kept by King Aeëtes of Colchis, one of Thersanon's paternal half-brothers. Parentage. Hyginus names Leucothoe as his mother; according to Ovid, Leucothoe was a mortal princess of Babylon that Helios fell in love with; but when her father discovered the affair thanks to Clytie, he buried Leucothoe alive, and afterwards her dead  body was turned into a frankincense tree by Helios. Hyginus assigning them a son might indicate that he knew a very different version of the myth, or perhaps he refers to another woman, such as the sea goddess Leucothea, whom he elsewhere refers to as "Leucothoe" in the same work.