Poseidon had a daughter with Pitane, the nymphe of a Laconian spring of a city She gave Her name to. Pitane named the girl Euadnê, and Euadnê grew to be quite beautiful, and she was raised in the Arkadian palace. As Euadnê grew older, Apollon became smitten, and asked Pitane to arrange that He could perhaps lay with Her daughter, and, with joy, Pitane agreed and took delight in dressing Her daughter for the occasion.
When Apollon lay with Euadnê, He believed He was clear to communicate His identity, but Euadnê, unaware of who her real father was believed she was completely mortal and didn’t really believe Him, and having never eaten the sweet nectar of Olympos she was more mortal than the deathless ones, so perhaps it was in her best interest not to, as she was certainly aware of the fate of Semele. When Euadne became full with child, she hid it from her parents, and when the time came, she bore the boy alone and took him far beyond the palace, leaving him in a patch of violets, in hope that someone would find him, and give him a decent life.
On Euadne’s walk home that night, her step-father had a dream that she had given birth to the son of Apollon and had left it in abandoned amongst the tiny purple flowers. When Euadne returned home, the king greeted her and then sent her back out to retrieve the boy. When she arrived, a shepherd had found the child, intending to raise him alone.
“But this is my son,” Euadne pleaded, weeping. “My father tells me I have born the son of Apollon and I must take him back home to retain the god’s favour over Arkadia.”
“But you exposed the child to the elements at the outskirts after carrying him for over half a year; I have been with the boy for barely five mi utes and have already given him a name. I had a vision of a child amongst the wildflowers and when I awoke I felt compelled to find it. Apollon gave me this son to raise as my own and finally make my family happy, by giving them a grandson.”
“If you truly want the child and to become part of his life, my father can have us married. You would receive a handsome dowry for saving the boy.”
After a moment to consider this, the shepherd agreed to return with Euadne to the palace and formalise the engagement with her father that the girl had offered. The engagement was announced, and the wedding was big and lavish.
The boy was named Iamos, after the violet patch, and like this step-father, received visions and prophecies. This gift later led him to Olympia, where he established the Iamidai, the House of the Violets, which continued for centuries in ancient times to hold prophecies and oracles of Apollon.
The violet is sacred to Apollon, and the colour named after it is the colour of prophecy, divination, fate. I’ve always linked it to the Moirai.