The Stag Constellation - Throne of Glass - The Stag, the Lord of the North. So the people of Terrasen could always find their way home. So they could look up at the sky, no matter where they are, and know that Terrasen is forever with them.
“I claim you, Rowan Whitethorn. I don’t care what you say and how much you protest. I claim you as my friend.” Their hands clasped between them, he whispered into her ear “I claim you, too, Aelin Galathynius.