Daughters of the Second Harpy

The Daughters of the Second Harpy, also known simply as the Daughters, are an old and large coven of Sirens and Mermaids. They're based in Silandria, though they originate from Moat Silin of Arestoneiam where they were based before they founded Silandria. Unknown to the world, the Daughters have had Great House Naharis at their mercy, using the sacred power of siren-elven hybrids to control their head of households to further their agendas.

Emythology
The Daughters receive their name from their founder, Loreilei the Beauty, the first siren-elven hybrid who was able to surpass the siren ability to attract men and control them. Because of her power, she was recognized as the second harpy, for she the first being the Goddess Silandria who created the race, and those in her coven became her daughters. Under loreilei's guide, the Daughters began conquering fiefs by pulling lords under the spell of Loreilei, and controlling them to further their agendas. Seemingly, they are the ladies of noble men, when in reality they are the ones pulling their strings.

Titles

 * First Harpy - The First Harpy is the leader of the Daughters of the Second Harpy. Under strict guidelines, the First Harpy must always be a siren-elven, and the only one in the coven. From birth, and throughout their time as the Messia, they are not allowed to see their mother or father and are raised at Black Moat by mermaids and sirens specialized in teaching the Messia about the world, especially in politics and the worlds of magic.
 * Mysia - The Mysia is a siren who is chosen to lay with an elf and create the next generation's First Harpy. A Mysia is selected once every forty years to birth the Messia. Once the Messia has been born, they are sent to the First Harpy where they are compensated for their sacrifice of giving up their child.
 * Messia - The Messia is the child that is preparing to become the next generation's First Harpy.