Tarquin

Brutius was Tarquin’s cousin and was caught trying to leave Under the Mountain to meet forces gathering to resist Amarantha. Rhys spared him from being turned into a living ghost.

Nostrus was Tarquin’s cousin and predecessor as High Lord of the Summer Court. Amarantha killed him after his rebellion.

Tarquin recognizes Feyre from Under the Mountain, where she helped save him and his court. A fragment of his power remains within her, creating a mysterious sense of connection as she visits his court.

Rhys wants to secure Tarquin’s cooperation and avoid making an enemy of him. Tarquin seeks an alliance with Rhys, but distrusts his secrecy and reputation; both courts’ interests are bound up in the search for the Book and the coming war.

Cresseida is Princess of Adriata and a politically influential member of Tarquin's court. Tarquin treats her with respect but ultimately asserts his authority when her caution toward Rhysand's party risks escalating tensions.

Varian serves in Tarquin’s court and was formerly a leader in Nostrus’s fleet alongside Tarquin. He participates in discussions about a possible unified armada and watches over Amren.

Amarantha killed Tarquin’s predecessor and his family, crushed the Summer Court’s cities, and ruled over Tarquin and his people. Tarquin survived her occupation and later became High Lord.

Amren is among those targeted by Tarquin’s blood-feud declaration, but Varian sends her a necklace to soften the feud and she decides not to destroy Adriata.